WIP adding draft-commented code to try and get splits workin..

Allows keeping mutex state around data reset requests which (if more
then one are sent) can cause a throttling condition where ib's servers
will get slower and slower to conduct a reconnect. With this you can
have multiple ongoing contract requests without hitting that issue and
we can go back to having a nice 3s timeout on the history queries before
activating the hack.

piker/_daemon.py

@@ -195,9 +195,8 @@ async def open_piker_runtime(
 
 ) -> Optional[tractor._portal.Portal]:
     '''
-    Start a piker actor who's runtime will automatically
-    sync with existing piker actors in local network
-    based on configuration.
+    Start a piker actor who's runtime will automatically sync with
+    existing piker actors on the local link based on configuration.
 
     '''
     global _services

piker/brokers/binance.py

@@ -388,6 +388,7 @@ async def open_history_client(
     async with open_cached_client('binance') as client:
 
         async def get_ohlc(
+            timeframe: float,
             end_dt: Optional[datetime] = None,
             start_dt: Optional[datetime] = None,
 

piker/brokers/ib/api.py

@@ -43,6 +43,7 @@ from bidict import bidict
 import trio
 import tractor
 from tractor import to_asyncio
+import pendulum
 import ib_insync as ibis
 from ib_insync.contract import (
     Contract,
@@ -52,6 +53,7 @@ from ib_insync.contract import (
 from ib_insync.order import Order
 from ib_insync.ticker import Ticker
 from ib_insync.objects import (
+    BarDataList,
     Position,
     Fill,
     Execution,
@@ -78,26 +80,11 @@ _time_units = {
     'h': ' hours',
 }
 
-_time_frames = {
-    '1s': '1 Sec',
-    '5s': '5 Sec',
-    '30s': '30 Sec',
-    '1m': 'OneMinute',
-    '2m': 'TwoMinutes',
-    '3m': 'ThreeMinutes',
-    '4m': 'FourMinutes',
-    '5m': 'FiveMinutes',
-    '10m': 'TenMinutes',
-    '15m': 'FifteenMinutes',
-    '20m': 'TwentyMinutes',
-    '30m': 'HalfHour',
-    '1h': 'OneHour',
-    '2h': 'TwoHours',
-    '4h': 'FourHours',
-    'D': 'OneDay',
-    'W': 'OneWeek',
-    'M': 'OneMonth',
-    'Y': 'OneYear',
+_bar_sizes = {
+    1: '1 Sec',
+    60: '1 min',
+    60*60: '1 hour',
+    24*60*60: '1 day',
 }
 
 _show_wap_in_history: bool = False
@@ -199,7 +186,8 @@ _adhoc_futes_set = {
     'lb.nymex',  # random len lumber
 
     # metals
-    'xauusd.cmdty',  # gold spot
+    # https://misc.interactivebrokers.com/cstools/contract_info/v3.10/index.php?action=Conid%20Info&wlId=IB&conid=69067924
+    'xauusd.cmdty',  # london gold spot ^
     'gc.nymex',
     'mgc.nymex',  # micro
 
@@ -257,14 +245,12 @@ _exch_skip_list = {
     'PSE',
 }
 
-# https://misc.interactivebrokers.com/cstools/contract_info/v3.10/index.php?action=Conid%20Info&wlId=IB&conid=69067924
-
 _enters = 0
 
 
 def bars_to_np(bars: list) -> np.ndarray:
     '''
-    Convert a "bars list thing" (``BarsList`` type from ibis)
+    Convert a "bars list thing" (``BarDataList`` type from ibis)
     into a numpy struct array.
 
     '''
@@ -284,6 +270,27 @@ def bars_to_np(bars: list) -> np.ndarray:
     return nparr
 
 
+# NOTE: pacing violations exist for higher sample rates:
+# https://interactivebrokers.github.io/tws-api/historical_limitations.html#pacing_violations
+# Also see note on duration limits being lifted on 1m+ periods,
+# but they say "use with discretion":
+# https://interactivebrokers.github.io/tws-api/historical_limitations.html#non-available_hd
+_samplings: dict[int, tuple[str, str]] = {
+    1: (
+        '1 secs',
+        f'{int(2e3)} S',
+        pendulum.duration(seconds=2e3),
+    ),
+    # TODO: benchmark >1 D duration on query to see if
+    # throughput can be made faster during backfilling.
+    60: (
+        '1 min',
+        '1 D',
+        pendulum.duration(days=1),
+    ),
+}
+
+
 class Client:
     '''
     IB wrapped for our broker backend API.
@@ -338,19 +345,32 @@ class Client:
         start_dt: Union[datetime, str] = "1970-01-01T00:00:00.000000-05:00",
         end_dt: Union[datetime, str] = "",
 
-        sample_period_s: str = 1,  # ohlc sample period
-        period_count: int = int(2e3),  # <- max per 1s sample query
+        # ohlc sample period in seconds
+        sample_period_s: int = 1,
 
-    ) -> list[dict[str, Any]]:
+        # optional "duration of time" equal to the
+        # length of the returned history frame.
+        duration: Optional[str] = None,
+
+        **kwargs,
+
+    ) -> tuple[BarDataList, np.ndarray, pendulum.Duration]:
         '''
         Retreive OHLCV bars for a fqsn over a range to the present.
 
         '''
+        # See API docs here:
+        # https://interactivebrokers.github.io/tws-api/historical_data.html
         bars_kwargs = {'whatToShow': 'TRADES'}
+        bars_kwargs.update(kwargs)
+        bar_size, duration, dt_duration = _samplings[sample_period_s]
 
         global _enters
         # log.info(f'REQUESTING BARS {_enters} @ end={end_dt}')
-        print(f'REQUESTING BARS {_enters} @ end={end_dt}')
+        print(
+            f"REQUESTING {duration}'s worth {bar_size} BARS\n"
+            f'{_enters} @ end={end_dt}"'
+        )
 
         if not end_dt:
             end_dt = ''
@@ -360,30 +380,20 @@ class Client:
         contract = (await self.find_contracts(fqsn))[0]
         bars_kwargs.update(getattr(contract, 'bars_kwargs', {}))
 
-        # _min = min(2000*100, count)
         bars = await self.ib.reqHistoricalDataAsync(
             contract,
             endDateTime=end_dt,
             formatDate=2,
 
-            # time history length values format:
-            # ``durationStr=integer{SPACE}unit (S|D|W|M|Y)``
-
             # OHLC sampling values:
             # 1 secs, 5 secs, 10 secs, 15 secs, 30 secs, 1 min, 2 mins,
             # 3 mins, 5 mins, 10 mins, 15 mins, 20 mins, 30 mins,
             # 1 hour, 2 hours, 3 hours, 4 hours, 8 hours, 1 day, 1W, 1M
-            # barSizeSetting='1 secs',
+            barSizeSetting=bar_size,
 
-            # durationStr='{count} S'.format(count=15000 * 5),
-            # durationStr='{count} D'.format(count=1),
-            # barSizeSetting='5 secs',
-
-            durationStr='{count} S'.format(count=period_count),
-            # barSizeSetting='5 secs',
-            barSizeSetting='1 secs',
-
-            # barSizeSetting='1 min',
+            # time history length values format:
+            # ``durationStr=integer{SPACE}unit (S|D|W|M|Y)``
+            durationStr=duration,
 
             # always use extended hours
             useRTH=False,
@@ -394,11 +404,21 @@ class Client:
             # whatToShow='TRADES',
         )
         if not bars:
-            # TODO: raise underlying error here
-            raise ValueError(f"No bars retreived for {fqsn}?")
+            # NOTE: there's 2 cases here to handle (and this should be
+            # read alongside the implementation of
+            # ``.reqHistoricalDataAsync()``):
+            # - no data is returned for the period likely due to
+            # a weekend, holiday or other non-trading period prior to
+            # ``end_dt`` which exceeds the ``duration``,
+            # - a timeout occurred in which case insync internals return
+            # an empty list thing with bars.clear()...
+            return [], np.empty(0), dt_duration
+            # TODO: we could maybe raise ``NoData`` instead if we
+            # rewrite the method in the first case? right now there's no
+            # way to detect a timeout.
 
         nparr = bars_to_np(bars)
-        return bars, nparr
+        return bars, nparr, dt_duration
 
     async def con_deats(
         self,
@@ -463,7 +483,7 @@ class Client:
         self,
         pattern: str,
         # how many contracts to search "up to"
-        upto: int = 6,
+        upto: int = 16,
         asdicts: bool = True,
 
     ) -> dict[str, ContractDetails]:
@@ -498,6 +518,16 @@ class Client:
 
                 exch = tract.exchange
                 if exch not in _exch_skip_list:
+
+                    # try to lookup any contracts from our adhoc set
+                    # since often the exchange/venue is named slightly
+                    # different (eg. BRR.CMECRYPTO` instead of just
+                    # `.CME`).
+                    info = _adhoc_symbol_map.get(sym)
+                    if info:
+                        con_kwargs, bars_kwargs = info
+                        exch = con_kwargs['exchange']
+
                     # try get all possible contracts for symbol as per,
                     # https://interactivebrokers.github.io/tws-api/basic_contracts.html#fut
                     con = ibis.Future(
@@ -1066,6 +1096,7 @@ async def load_aio_clients(
     # retry a few times to get the client going..
     connect_retries: int = 3,
     connect_timeout: float = 0.5,
+    disconnect_on_exit: bool = True,
 
 ) -> dict[str, Client]:
     '''
@@ -1207,10 +1238,11 @@ async def load_aio_clients(
     finally:
         # TODO: for re-scans we'll want to not teardown clients which
         # are up and stable right?
-        for acct, client in _accounts2clients.items():
-            log.info(f'Disconnecting {acct}@{client}')
-            client.ib.disconnect()
-            _client_cache.pop((host, port), None)
+        if disconnect_on_exit:
+            for acct, client in _accounts2clients.items():
+                log.info(f'Disconnecting {acct}@{client}')
+                client.ib.disconnect()
+                _client_cache.pop((host, port), None)
 
 
 async def load_clients_for_trio(

piker/brokers/ib/broker.py

@@ -305,7 +305,7 @@ async def update_ledger_from_api_trades(
         entry['listingExchange'] = pexch
 
     conf = get_config()
-    entries = trades_to_ledger_entries(
+    entries = api_trades_to_ledger_entries(
         conf['accounts'].inverse,
         trade_entries,
     )
@@ -362,7 +362,7 @@ async def update_and_audit_msgs(
                 # if ib reports a lesser pp it's not as bad since we can
                 # presume we're at least not more in the shit then we
                 # thought.
-                if diff:
+                if diff and pikersize:
                     reverse_split_ratio = pikersize / ibsize
                     split_ratio = 1/reverse_split_ratio
 
@@ -372,6 +372,7 @@ async def update_and_audit_msgs(
                         entry = f'split_ratio = 1/{int(reverse_split_ratio)}'
 
                     raise ValueError(
+                    # log.error(
                         f'POSITION MISMATCH ib <-> piker ledger:\n'
                         f'ib: {ibppmsg}\n'
                         f'piker: {msg}\n'
@@ -1122,18 +1123,16 @@ def norm_trade_records(
             continue
 
         # timestamping is way different in API records
+        dtstr = record.get('datetime')
         date = record.get('date')
-        if not date:
-            # probably a flex record with a wonky non-std timestamp..
-            date, ts = record['dateTime'].split(';')
-            dt = pendulum.parse(date)
-            ts = f'{ts[:2]}:{ts[2:4]}:{ts[4:]}'
-            tsdt = pendulum.parse(ts)
-            dt.set(hour=tsdt.hour, minute=tsdt.minute, second=tsdt.second)
+        flex_dtstr = record.get('dateTime')
 
-        else:
-            # epoch_dt = pendulum.from_timestamp(record.get('time'))
-            dt = pendulum.parse(date)
+        if dtstr or date:
+            dt = pendulum.parse(dtstr or date)
+
+        elif flex_dtstr:
+            # probably a flex record with a wonky non-std timestamp..
+            dt = parse_flex_dt(record['dateTime'])
 
         # special handling of symbol extraction from
         # flex records using some ad-hoc schema parsing.
@@ -1182,69 +1181,58 @@ def norm_trade_records(
     return {r.tid: r for r in records}
 
 
-def trades_to_ledger_entries(
+def parse_flex_dt(
+    record: str,
+) -> pendulum.datetime:
+    date, ts = record.split(';')
+    dt = pendulum.parse(date)
+    ts = f'{ts[:2]}:{ts[2:4]}:{ts[4:]}'
+    tsdt = pendulum.parse(ts)
+    return dt.set(hour=tsdt.hour, minute=tsdt.minute, second=tsdt.second)
+
+
+def api_trades_to_ledger_entries(
     accounts: bidict,
     trade_entries: list[object],
-    source_type: str = 'api',
 
 ) -> dict:
     '''
-    Convert either of API execution objects or flex report
-    entry objects into ``dict`` form, pretty much straight up
-    without modification.
+    Convert API execution objects entry objects into ``dict`` form,
+    pretty much straight up without modification except add
+    a `pydatetime` field from the parsed timestamp.
 
     '''
     trades_by_account = {}
-
     for t in trade_entries:
-        if source_type == 'flex':
-            entry = t.__dict__
+        # NOTE: example of schema we pull from the API client.
+        # {
+        #     'commissionReport': CommissionReport(...
+        #     'contract': {...
+        #     'execution': Execution(...
+        #     'time': 1654801166.0
+        # }
 
-            # XXX: LOL apparently ``toml`` has a bug
-            # where a section key error will show up in the write
-            # if you leave a table key as an `int`? So i guess
-            # cast to strs for all keys..
+        # flatten all sub-dicts and values into one top level entry.
+        entry = {}
+        for section, val in t.items():
+            match section:
+                case 'contract' | 'execution' | 'commissionReport':
+                    # sub-dict cases
+                    entry.update(val)
 
-            # oddly for some so-called "BookTrade" entries
-            # this field seems to be blank, no cuckin clue.
-            # trade['ibExecID']
-            tid = str(entry.get('ibExecID') or entry['tradeID'])
-            # date = str(entry['tradeDate'])
+                case 'time':
+                    # ib has wack ns timestamps, or is that us?
+                    continue
 
-            # XXX: is it going to cause problems if a account name
-            # get's lost? The user should be able to find it based
-            # on the actual exec history right?
-            acctid = accounts[str(entry['accountId'])]
+                case _:
+                    entry[section] = val
 
-        elif source_type == 'api':
-            # NOTE: example of schema we pull from the API client.
-            # {
-            #     'commissionReport': CommissionReport(...
-            #     'contract': {...
-            #     'execution': Execution(...
-            #     'time': 1654801166.0
-            # }
-
-            # flatten all sub-dicts and values into one top level entry.
-            entry = {}
-            for section, val in t.items():
-                match section:
-                    case 'contract' | 'execution' | 'commissionReport':
-                        # sub-dict cases
-                        entry.update(val)
-
-                    case 'time':
-                        # ib has wack ns timestamps, or is that us?
-                        continue
-
-                    case _:
-                        entry[section] = val
-
-            tid = str(entry['execId'])
-            dt = pendulum.from_timestamp(entry['time'])
-            # TODO: why isn't this showing seconds in the str?
-            entry['date'] = str(dt)
-            acctid = accounts[entry['acctNumber']]
+        tid = str(entry['execId'])
+        dt = pendulum.from_timestamp(entry['time'])
+        # TODO: why isn't this showing seconds in the str?
+        entry['pydatetime'] = dt
+        entry['datetime'] = str(dt)
+        acctid = accounts[entry['acctNumber']]
 
         if not tid:
             # this is likely some kind of internal adjustment
@@ -1262,6 +1250,73 @@ def trades_to_ledger_entries(
             acctid, {}
         )[tid] = entry
 
+    # sort entries in output by python based datetime
+    for acctid in trades_by_account:
+        trades_by_account[acctid] = dict(sorted(
+            trades_by_account[acctid].items(),
+            key=lambda entry: entry[1].pop('pydatetime'),
+        ))
+
+    return trades_by_account
+
+
+def flex_records_to_ledger_entries(
+    accounts: bidict,
+    trade_entries: list[object],
+
+) -> dict:
+    '''
+    Convert flex report entry objects into ``dict`` form, pretty much
+    straight up without modification except add a `pydatetime` field
+    from the parsed timestamp.
+
+    '''
+    trades_by_account = {}
+    for t in trade_entries:
+        entry = t.__dict__
+
+        # XXX: LOL apparently ``toml`` has a bug
+        # where a section key error will show up in the write
+        # if you leave a table key as an `int`? So i guess
+        # cast to strs for all keys..
+
+        # oddly for some so-called "BookTrade" entries
+        # this field seems to be blank, no cuckin clue.
+        # trade['ibExecID']
+        tid = str(entry.get('ibExecID') or entry['tradeID'])
+        # date = str(entry['tradeDate'])
+
+        # XXX: is it going to cause problems if a account name
+        # get's lost? The user should be able to find it based
+        # on the actual exec history right?
+        acctid = accounts[str(entry['accountId'])]
+
+        # probably a flex record with a wonky non-std timestamp..
+        dt = entry['pydatetime'] = parse_flex_dt(entry['dateTime'])
+        entry['datetime'] = str(dt)
+
+        if not tid:
+            # this is likely some kind of internal adjustment
+            # transaction, likely one of the following:
+            # - an expiry event that will show a "book trade" indicating
+            #   some adjustment to cash balances: zeroing or itm settle.
+            # - a manual cash balance position adjustment likely done by
+            #   the user from the accounts window in TWS where they can
+            #   manually set the avg price and size:
+            #   https://api.ibkr.com/lib/cstools/faq/web1/index.html#/tag/DTWS_ADJ_AVG_COST
+            log.warning(f'Skipping ID-less ledger entry:\n{pformat(entry)}')
+            continue
+
+        trades_by_account.setdefault(
+            acctid, {}
+        )[tid] = entry
+
+    for acctid in trades_by_account:
+        trades_by_account[acctid] = dict(sorted(
+            trades_by_account[acctid].items(),
+            key=lambda entry: entry[1]['pydatetime'],
+        ))
+
     return trades_by_account
 
 
@@ -1308,15 +1363,16 @@ def load_flex_trades(
     ln = len(trade_entries)
     log.info(f'Loaded {ln} trades from flex query')
 
-    trades_by_account = trades_to_ledger_entries(
-        # get reverse map to user account names
-        conf['accounts'].inverse,
+    trades_by_account = flex_records_to_ledger_entries(
+        conf['accounts'].inverse,  # reverse map to user account names
         trade_entries,
-        source_type='flex',
     )
 
+    ledger_dict: Optional[dict] = None
+
     for acctid in trades_by_account:
         trades_by_id = trades_by_account[acctid]
+
         with open_trade_ledger('ib', acctid) as ledger_dict:
             tid_delta = set(trades_by_id) - set(ledger_dict)
             log.info(
@@ -1324,9 +1380,11 @@ def load_flex_trades(
                 f'{pformat(tid_delta)}'
             )
             if tid_delta:
-                ledger_dict.update(
-                    {tid: trades_by_id[tid] for tid in tid_delta}
-                )
+                sorted_delta = dict(sorted(
+                    {tid: trades_by_id[tid] for tid in tid_delta}.items(),
+                    key=lambda entry: entry[1].pop('pydatetime'),
+                ))
+                ledger_dict.update(sorted_delta)
 
     return ledger_dict
 

piker/brokers/ib/feed.py

@@ -22,6 +22,7 @@ import asyncio
 from contextlib import asynccontextmanager as acm
 from dataclasses import asdict
 from datetime import datetime
+from functools import partial
 from math import isnan
 import time
 from typing import (
@@ -38,7 +39,6 @@ import tractor
 import trio
 from trio_typing import TaskStatus
 
-from piker.data._sharedmem import ShmArray
 from .._util import SymbolNotFound, NoData
 from .api import (
     # _adhoc_futes_set,
@@ -111,24 +111,54 @@ async def open_history_client(
     that takes in ``pendulum.datetime`` and returns ``numpy`` arrays.
 
     '''
+    # TODO:
+    # - add logic to handle tradable hours and only grab
+    #   valid bars in the range?
+    # - we want to avoid overrunning the underlying shm array buffer and
+    #   we should probably calc the number of calls to make depending on
+    #   that until we have the `marketstore` daemon in place in which case
+    #   the shm size will be driven by user config and available sys
+    #   memory.
+
     async with open_data_client() as proxy:
 
+        max_timeout: float = 2.
+        mean: float = 0
+        count: int = 0
+
         async def get_hist(
+            timeframe: float,
             end_dt: Optional[datetime] = None,
             start_dt: Optional[datetime] = None,
 
         ) -> tuple[np.ndarray, str]:
+            nonlocal max_timeout, mean, count
 
-            out, fails = await get_bars(proxy, symbol, end_dt=end_dt)
+            query_start = time.time()
+            out, timedout = await get_bars(
+                proxy,
+                symbol,
+                timeframe,
+                end_dt=end_dt,
+            )
+            latency = time.time() - query_start
+            if (
+                not timedout
+                # and latency <= max_timeout
+            ):
+                count += 1
+                mean += latency / count
+                print(
+                    f'HISTORY FRAME QUERY LATENCY: {latency}\n'
+                    f'mean: {mean}'
+                )
 
-            # TODO: add logic here to handle tradable hours and only grab
-            # valid bars in the range
             if out is None:
                 # could be trying to retreive bars over weekend
                 log.error(f"Can't grab bars starting at {end_dt}!?!?")
                 raise NoData(
                     f'{end_dt}',
-                    frame_size=2000,
+                    # frame_size=2000,
                 )
 
             bars, bars_array, first_dt, last_dt = out
@@ -145,7 +175,7 @@ async def open_history_client(
         # quite sure why.. needs some tinkering and probably
         # a lookthrough of the ``ib_insync`` machinery, for eg. maybe
         # we have to do the batch queries on the `asyncio` side?
-        yield get_hist, {'erlangs': 1, 'rate': 6}
+        yield get_hist, {'erlangs': 1, 'rate': 3}
 
 
 _pacing: str = (
@@ -154,261 +184,266 @@ _pacing: str = (
 )
 
 
+async def wait_on_data_reset(
+    proxy: MethodProxy,
+    reset_type: str = 'data',
+    timeout: float = 16,
+
+    task_status: TaskStatus[
+        tuple[
+            trio.CancelScope,
+            trio.Event,
+        ]
+    ] = trio.TASK_STATUS_IGNORED,
+) -> bool:
+
+    # TODO: we might have to put a task lock around this
+    # method..
+    hist_ev = proxy.status_event(
+        'HMDS data farm connection is OK:ushmds'
+    )
+
+    # XXX: other event messages we might want to try and
+    # wait for but i wasn't able to get any of this
+    # reliable..
+    # reconnect_start = proxy.status_event(
+    #     'Market data farm is connecting:usfuture'
+    # )
+    # live_ev = proxy.status_event(
+    #     'Market data farm connection is OK:usfuture'
+    # )
+    # try to wait on the reset event(s) to arrive, a timeout
+    # will trigger a retry up to 6 times (for now).
+
+    done = trio.Event()
+    with trio.move_on_after(timeout) as cs:
+
+        task_status.started((cs, done))
+
+        log.warning('Sending DATA RESET request')
+        res = await data_reset_hack(reset_type=reset_type)
+
+        if not res:
+            log.warning(
+                'NO VNC DETECTED!\n'
+                'Manually press ctrl-alt-f on your IB java app'
+            )
+            done.set()
+            return False
+
+        # TODO: not sure if waiting on other events
+        # is all that useful here or not.
+        # - in theory you could wait on one of the ones above first
+        # to verify the reset request was sent?
+        # - we need the same for real-time quote feeds which can
+        # sometimes flake out and stop delivering..
+        for name, ev in [
+            ('history', hist_ev),
+        ]:
+            await ev.wait()
+            log.info(f"{name} DATA RESET")
+            done.set()
+            return True
+
+    if cs.cancel_called:
+        log.warning(
+            'Data reset task canceled?'
+        )
+
+    done.set()
+    return False
+
+
+_data_resetter_task: trio.Task | None = None
+
+
 async def get_bars(
 
     proxy: MethodProxy,
     fqsn: str,
+    timeframe: int,
 
     # blank to start which tells ib to look up the latest datum
     end_dt: str = '',
 
+    # TODO: make this more dynamic based on measured frame rx latency..
+    timeout: float = 3,  # how long before we trigger a feed reset
+
+    task_status: TaskStatus[trio.CancelScope] = trio.TASK_STATUS_IGNORED,
+
 ) -> (dict, np.ndarray):
     '''
     Retrieve historical data from a ``trio``-side task using
     a ``MethoProxy``.
 
     '''
-    fails = 0
-    bars: Optional[list] = None
-    first_dt: datetime = None
-    last_dt: datetime = None
+    global _data_resetter_task
 
-    if end_dt:
-        last_dt = pendulum.from_timestamp(end_dt.timestamp())
+    data_cs: trio.CancelScope | None = None
+    result: tuple[
+        ibis.objects.BarDataList,
+        np.ndarray,
+        datetime,
+        datetime,
+    ] | None = None
+    result_ready = trio.Event()
 
-    for _ in range(10):
-        try:
-            out = await proxy.bars(
-                fqsn=fqsn,
-                end_dt=end_dt,
-            )
-            if out:
-                bars, bars_array = out
+    async def query():
+        nonlocal result, data_cs, end_dt
+        while True:
+            try:
+                out = await proxy.bars(
+                    fqsn=fqsn,
+                    end_dt=end_dt,
+                    sample_period_s=timeframe,
 
-            else:
-                await tractor.breakpoint()
-
-            if bars_array is None:
-                raise SymbolNotFound(fqsn)
-
-            first_dt = pendulum.from_timestamp(
-                bars[0].date.timestamp())
-
-            last_dt = pendulum.from_timestamp(
-                bars[-1].date.timestamp())
-
-            time = bars_array['time']
-            assert time[-1] == last_dt.timestamp()
-            assert time[0] == first_dt.timestamp()
-            log.info(
-                f'{len(bars)} bars retreived for {first_dt} -> {last_dt}'
-            )
-
-            return (bars, bars_array, first_dt, last_dt), fails
-
-        except RequestError as err:
-            msg = err.message
-
-            if 'No market data permissions for' in msg:
-                # TODO: signalling for no permissions searches
-                raise NoData(
-                    f'Symbol: {fqsn}',
+                    # ideally we cancel the request just before we
+                    # cancel on the ``trio``-side and trigger a data
+                    # reset hack.. the problem is there's no way (with
+                    # current impl) to detect a cancel case.
+                    # timeout=timeout,
                 )
-
-            elif (
-                err.code == 162 and
-                'HMDS query returned no data' in err.message
-            ):
-                # XXX: this is now done in the storage mgmt layer
-                # and we shouldn't implicitly decrement the frame dt
-                # index since the upper layer may be doing so
-                # concurrently and we don't want to be delivering frames
-                # that weren't asked for.
-                log.warning(
-                    f'NO DATA found ending @ {end_dt}\n'
-                )
-
-                # try to decrement start point and look further back
-                # end_dt = last_dt = last_dt.subtract(seconds=2000)
-
-                raise NoData(
-                    f'Symbol: {fqsn}',
-                    frame_size=2000,
-                )
-
-            # elif (
-            #     err.code == 162 and
-            #     'Trading TWS session is connected from a different IP
-            #     address' in err.message
-            # ):
-            #     log.warning("ignoring ip address warning")
-            #     continue
-
-            elif _pacing in msg:
-
-                log.warning(
-                    'History throttle rate reached!\n'
-                    'Resetting farms with `ctrl-alt-f` hack\n'
-                )
-                # TODO: we might have to put a task lock around this
-                # method..
-                hist_ev = proxy.status_event(
-                    'HMDS data farm connection is OK:ushmds'
-                )
-
-                # XXX: other event messages we might want to try and
-                # wait for but i wasn't able to get any of this
-                # reliable..
-                # reconnect_start = proxy.status_event(
-                #     'Market data farm is connecting:usfuture'
-                # )
-                # live_ev = proxy.status_event(
-                #     'Market data farm connection is OK:usfuture'
-                # )
-
-                # try to wait on the reset event(s) to arrive, a timeout
-                # will trigger a retry up to 6 times (for now).
-                tries: int = 2
-                timeout: float = 10
-
-                # try 3 time with a data reset then fail over to
-                # a connection reset.
-                for i in range(1, tries):
-
-                    log.warning('Sending DATA RESET request')
-                    await data_reset_hack(reset_type='data')
-
-                    with trio.move_on_after(timeout) as cs:
-                        for name, ev in [
-                            # TODO: not sure if waiting on other events
-                            # is all that useful here or not. in theory
-                            # you could wait on one of the ones above
-                            # first to verify the reset request was
-                            # sent?
-                            ('history', hist_ev),
-                        ]:
-                            await ev.wait()
-                            log.info(f"{name} DATA RESET")
-                            break
-
-                    if cs.cancelled_caught:
-                        fails += 1
-                        log.warning(
-                            f'Data reset {name} timeout, retrying {i}.'
-                        )
-
-                        continue
-                else:
-
-                    log.warning('Sending CONNECTION RESET')
-                    res = await data_reset_hack(reset_type='connection')
-                    if not res:
-                        log.warning(
-                            'NO VNC DETECTED!\n'
-                            'Manually press ctrl-alt-f on your IB java app'
-                        )
-                        # break
-
-                    with trio.move_on_after(timeout) as cs:
-                        for name, ev in [
-                            # TODO: not sure if waiting on other events
-                            # is all that useful here or not. in theory
-                            # you could wait on one of the ones above
-                            # first to verify the reset request was
-                            # sent?
-                            ('history', hist_ev),
-                        ]:
-                            await ev.wait()
-                            log.info(f"{name} DATA RESET")
-
-                    if cs.cancelled_caught:
-                        fails += 1
-                        log.warning('Data CONNECTION RESET timeout!?')
-
-            else:
-                raise
-
-    return None, None
-    # else:  # throttle wasn't fixed so error out immediately
-    #     raise _err
-
-
-async def backfill_bars(
-
-    fqsn: str,
-    shm: ShmArray,  # type: ignore # noqa
-
-    # TODO: we want to avoid overrunning the underlying shm array buffer
-    # and we should probably calc the number of calls to make depending
-    # on that until we have the `marketstore` daemon in place in which
-    # case the shm size will be driven by user config and available sys
-    # memory.
-    count: int = 16,
-
-    task_status: TaskStatus[trio.CancelScope] = trio.TASK_STATUS_IGNORED,
-
-) -> None:
-    '''
-    Fill historical bars into shared mem / storage afap.
-
-    TODO: avoid pacing constraints:
-    https://github.com/pikers/piker/issues/128
-
-    '''
-    # last_dt1 = None
-    last_dt = None
-
-    with trio.CancelScope() as cs:
-
-        async with open_data_client() as proxy:
-
-            out, fails = await get_bars(proxy, fqsn)
-
-            if out is None:
-                raise RuntimeError("Could not pull currrent history?!")
-
-            (first_bars, bars_array, first_dt, last_dt) = out
-            vlm = bars_array['volume']
-            vlm[vlm < 0] = 0
-            last_dt = first_dt
-
-            # write historical data to buffer
-            shm.push(bars_array)
-
-            task_status.started(cs)
-
-            i = 0
-            while i < count:
-
-                out, fails = await get_bars(proxy, fqsn, end_dt=first_dt)
-
                 if out is None:
-                    # could be trying to retreive bars over weekend
-                    # TODO: add logic here to handle tradable hours and
-                    # only grab valid bars in the range
-                    log.error(f"Can't grab bars starting at {first_dt}!?!?")
+                    raise NoData(f'{end_dt}')
 
-                    # XXX: get_bars() should internally decrement dt by
-                    # 2k seconds and try again.
+                bars, bars_array, dt_duration = out
+
+                if not bars:
+                    log.warning(
+                        f'History is blank for {dt_duration} from {end_dt}'
+                    )
+                    end_dt -= dt_duration
                     continue
 
-                (first_bars, bars_array, first_dt, last_dt) = out
-                # last_dt1 = last_dt
-                # last_dt = first_dt
+                if bars_array is None:
+                    raise SymbolNotFound(fqsn)
 
-                # volume cleaning since there's -ve entries,
-                # wood luv to know what crookery that is..
-                vlm = bars_array['volume']
-                vlm[vlm < 0] = 0
+                first_dt = pendulum.from_timestamp(
+                    bars[0].date.timestamp())
 
-                # TODO we should probably dig into forums to see what peeps
-                # think this data "means" and then use it as an indicator of
-                # sorts? dinkus has mentioned that $vlms for the day dont'
-                # match other platforms nor the summary stat tws shows in
-                # the monitor - it's probably worth investigating.
+                last_dt = pendulum.from_timestamp(
+                    bars[-1].date.timestamp())
 
-                shm.push(bars_array, prepend=True)
-                i += 1
+                time = bars_array['time']
+                assert time[-1] == last_dt.timestamp()
+                assert time[0] == first_dt.timestamp()
+                log.info(
+                    f'{len(bars)} bars retreived {first_dt} -> {last_dt}'
+                )
+
+                if data_cs:
+                    data_cs.cancel()
+
+                result = (bars, bars_array, first_dt, last_dt)
+
+                # signal data reset loop parent task
+                result_ready.set()
+
+                return result
+
+            except RequestError as err:
+                msg = err.message
+
+                if 'No market data permissions for' in msg:
+                    # TODO: signalling for no permissions searches
+                    raise NoData(
+                        f'Symbol: {fqsn}',
+                    )
+
+                elif err.code == 162:
+                    if 'HMDS query returned no data' in err.message:
+                        # XXX: this is now done in the storage mgmt
+                        # layer and we shouldn't implicitly decrement
+                        # the frame dt index since the upper layer may
+                        # be doing so concurrently and we don't want to
+                        # be delivering frames that weren't asked for.
+                        log.warning(
+                            f'NO DATA found ending @ {end_dt}\n'
+                        )
+
+                        # try to decrement start point and look further back
+                        # end_dt = end_dt.subtract(seconds=2000)
+                        end_dt = end_dt.subtract(days=1)
+                        print("SUBTRACTING DAY")
+                        continue
+
+                    elif 'API historical data query cancelled' in err.message:
+                        log.warning(
+                            'Query cancelled by IB (:eyeroll:):\n'
+                            f'{err.message}'
+                        )
+                        continue
+                    elif (
+                        'Trading TWS session is connected from a different IP'
+                            in err.message
+                    ):
+                        log.warning("ignoring ip address warning")
+                        continue
+
+                # XXX: more or less same as above timeout case
+                elif _pacing in msg:
+                    log.warning(
+                        'History throttle rate reached!\n'
+                        'Resetting farms with `ctrl-alt-f` hack\n'
+                    )
+
+                    # cancel any existing reset task
+                    if data_cs:
+                        data_cs.cancel()
+
+                    # spawn new data reset task
+                    data_cs, reset_done = await nurse.start(
+                        partial(
+                            wait_on_data_reset,
+                            proxy,
+                            timeout=float('inf'),
+                            reset_type='connection'
+                        )
+                    )
+                    continue
+
+                else:
+                    raise
+
+    # TODO: make this global across all history task/requests
+    # such that simultaneous symbol queries don't try data resettingn
+    # too fast..
+    unset_resetter: bool = False
+    async with trio.open_nursery() as nurse:
+
+        # start history request that we allow
+        # to run indefinitely until a result is acquired
+        nurse.start_soon(query)
+
+        # start history reset loop which waits up to the timeout
+        # for a result before triggering a data feed reset.
+        while not result_ready.is_set():
+
+            with trio.move_on_after(timeout):
+                await result_ready.wait()
+                break
+
+            if _data_resetter_task:
+                # don't double invoke the reset hack if another
+                # requester task already has it covered.
+                continue
+            else:
+                _data_resetter_task = trio.lowlevel.current_task()
+                unset_resetter = True
+
+            # spawn new data reset task
+            data_cs, reset_done = await nurse.start(
+                partial(
+                    wait_on_data_reset,
+                    proxy,
+                    timeout=float('inf'),
+                )
+            )
+            # sync wait on reset to complete
+            await reset_done.wait()
+
+    _data_resetter_task = None if unset_resetter else _data_resetter_task
+    return result, data_cs is not None
 
 
 asset_type_map = {
@@ -466,7 +501,9 @@ async def _setup_quote_stream(
 
     to_trio.send_nowait(None)
 
-    async with load_aio_clients() as accts2clients:
+    async with load_aio_clients(
+        disconnect_on_exit=False,
+    ) as accts2clients:
         caccount_name, client = get_preferred_data_client(accts2clients)
         contract = contract or (await client.find_contract(symbol))
         ticker: Ticker = client.ib.reqMktData(contract, ','.join(opts))
@@ -512,10 +549,11 @@ async def _setup_quote_stream(
                 # Manually do the dereg ourselves.
                 teardown()
             except trio.WouldBlock:
-                log.warning(
-                    f'channel is blocking symbol feed for {symbol}?'
-                    f'\n{to_trio.statistics}'
-                )
+                # log.warning(
+                #     f'channel is blocking symbol feed for {symbol}?'
+                #     f'\n{to_trio.statistics}'
+                # )
+                pass
 
             # except trio.WouldBlock:
             #     # for slow debugging purposes to avoid clobbering prompt
@@ -545,7 +583,8 @@ async def open_aio_quote_stream(
     from_aio = _quote_streams.get(symbol)
     if from_aio:
 
-        # if we already have a cached feed deliver a rx side clone to consumer
+        # if we already have a cached feed deliver a rx side clone
+        # to consumer
         async with broadcast_receiver(
             from_aio,
             2**6,
@@ -736,67 +775,97 @@ async def stream_quotes(
             await trio.sleep_forever()
             return  # we never expect feed to come up?
 
-        async with open_aio_quote_stream(
-            symbol=sym,
-            contract=con,
-        ) as stream:
-
-            # ugh, clear ticks since we've consumed them
-            # (ahem, ib_insync is stateful trash)
-            first_ticker.ticks = []
-
-            task_status.started((init_msgs, first_quote))
-
-            async with aclosing(stream):
-                if syminfo.get('no_vlm', False):
-
-                    # generally speaking these feeds don't
-                    # include vlm data.
-                    atype = syminfo['asset_type']
-                    log.info(
-                        f'Non-vlm asset {sym}@{atype}, skipping quote poll...'
-                    )
-
-                else:
-                    # wait for real volume on feed (trading might be closed)
-                    while True:
-                        ticker = await stream.receive()
-
-                        # for a real volume contract we rait for the first
-                        # "real" trade to take place
-                        if (
-                            # not calc_price
-                            # and not ticker.rtTime
-                            not ticker.rtTime
-                        ):
-                            # spin consuming tickers until we get a real
-                            # market datum
-                            log.debug(f"New unsent ticker: {ticker}")
-                            continue
-                        else:
-                            log.debug("Received first real volume tick")
-                            # ugh, clear ticks since we've consumed them
-                            # (ahem, ib_insync is truly stateful trash)
-                            ticker.ticks = []
-
-                            # XXX: this works because we don't use
-                            # ``aclosing()`` above?
-                            break
-
-                    quote = normalize(ticker)
-                    log.debug(f"First ticker received {quote}")
-
-                # tell caller quotes are now coming in live
-                feed_is_live.set()
-
-                # last = time.time()
-                async for ticker in stream:
-                    quote = normalize(ticker)
-                    await send_chan.send({quote['fqsn']: quote})
-
+        cs: Optional[trio.CancelScope] = None
+        startup: bool = True
+        while (
+            startup
+            or cs.cancel_called
+        ):
+            with trio.CancelScope() as cs:
+                async with (
+                    trio.open_nursery() as nurse,
+                    open_aio_quote_stream(
+                        symbol=sym,
+                        contract=con,
+                    ) as stream,
+                ):
                     # ugh, clear ticks since we've consumed them
-                    ticker.ticks = []
-                    # last = time.time()
+                    # (ahem, ib_insync is stateful trash)
+                    first_ticker.ticks = []
+
+                    # only on first entry at feed boot up
+                    if startup:
+                        startup = False
+                        task_status.started((init_msgs, first_quote))
+
+                    # start a stream restarter task which monitors the
+                    # data feed event.
+                    async def reset_on_feed():
+
+                        # TODO: this seems to be surpressed from the
+                        # traceback in ``tractor``?
+                        # assert 0
+
+                        rt_ev = proxy.status_event(
+                            'Market data farm connection is OK:usfarm'
+                        )
+                        await rt_ev.wait()
+                        cs.cancel()  # cancel called should now be set
+
+                    nurse.start_soon(reset_on_feed)
+
+                    async with aclosing(stream):
+                        if syminfo.get('no_vlm', False):
+
+                            # generally speaking these feeds don't
+                            # include vlm data.
+                            atype = syminfo['asset_type']
+                            log.info(
+                                f'No-vlm {sym}@{atype}, skipping quote poll'
+                            )
+
+                        else:
+                            # wait for real volume on feed (trading might be
+                            # closed)
+                            while True:
+                                ticker = await stream.receive()
+
+                                # for a real volume contract we rait for
+                                # the first "real" trade to take place
+                                if (
+                                    # not calc_price
+                                    # and not ticker.rtTime
+                                    not ticker.rtTime
+                                ):
+                                    # spin consuming tickers until we
+                                    # get a real market datum
+                                    log.debug(f"New unsent ticker: {ticker}")
+                                    continue
+                                else:
+                                    log.debug("Received first volume tick")
+                                    # ugh, clear ticks since we've
+                                    # consumed them (ahem, ib_insync is
+                                    # truly stateful trash)
+                                    ticker.ticks = []
+
+                                    # XXX: this works because we don't use
+                                    # ``aclosing()`` above?
+                                    break
+
+                            quote = normalize(ticker)
+                            log.debug(f"First ticker received {quote}")
+
+                        # tell caller quotes are now coming in live
+                        feed_is_live.set()
+
+                        # last = time.time()
+                        async for ticker in stream:
+                            quote = normalize(ticker)
+                            await send_chan.send({quote['fqsn']: quote})
+
+                            # ugh, clear ticks since we've consumed them
+                            ticker.ticks = []
+                            # last = time.time()
 
 
 async def data_reset_hack(
@@ -904,7 +973,14 @@ async def open_symbol_search(
                     except trio.WouldBlock:
                         pass
 
-                if not pattern or pattern.isspace():
+                if (
+                    not pattern
+                    or pattern.isspace()
+
+                    # XXX: not sure if this is a bad assumption but it
+                    # seems to make search snappier?
+                    or len(pattern) < 1
+                ):
                     log.warning('empty pattern received, skipping..')
 
                     # TODO: *BUG* if nothing is returned here the client

piker/brokers/kraken/feed.py

@@ -258,6 +258,7 @@ async def open_history_client(
         queries: int = 0
 
         async def get_ohlc(
+            timeframe: float,
             end_dt: Optional[datetime] = None,
             start_dt: Optional[datetime] = None,
 

piker/cli/__init__.py

@@ -138,25 +138,26 @@ def cli(ctx, brokers, loglevel, tl, configdir):
 @click.pass_obj
 def services(config, tl, names):
 
-    async def list_services():
+    from .._daemon import open_piker_runtime
 
-        async with tractor.get_arbiter(
-            *_tractor_kwargs['arbiter_addr']
-        ) as portal:
+    async def list_services():
+        async with (
+            open_piker_runtime(
+                name='service_query',
+                loglevel=config['loglevel'] if tl else None,
+            ),
+            tractor.get_arbiter(
+                *_tractor_kwargs['arbiter_addr']
+            ) as portal
+        ):
             registry = await portal.run_from_ns('self', 'get_registry')
             json_d = {}
             for key, socket in registry.items():
-                # name, uuid = uid
                 host, port = socket
                 json_d[key] = f'{host}:{port}'
             click.echo(f"{colorize_json(json_d)}")
 
-    tractor.run(
-        list_services,
-        name='service_query',
-        loglevel=config['loglevel'] if tl else None,
-        arbiter_addr=_tractor_kwargs['arbiter_addr'],
-    )
+    trio.run(list_services)
 
 
 def _load_clis() -> None:

piker/data/feed.py

@@ -21,16 +21,19 @@ This module is enabled for ``brokerd`` daemons.
 
 """
 from __future__ import annotations
-from dataclasses import dataclass, field
-from datetime import datetime
 from contextlib import asynccontextmanager
+from dataclasses import (
+    dataclass,
+    field,
+)
+from datetime import datetime
 from functools import partial
-from pprint import pformat
 from types import ModuleType
 from typing import (
     Any,
-    AsyncIterator, Optional,
-    Generator,
+    AsyncIterator,
+    Callable,
+    Optional,
     Awaitable,
     TYPE_CHECKING,
     Union,
@@ -39,7 +42,6 @@ from typing import (
 import trio
 from trio.abc import ReceiveChannel
 from trio_typing import TaskStatus
-import trimeter
 import tractor
 from tractor.trionics import maybe_open_context
 import pendulum
@@ -252,6 +254,7 @@ async def start_backfill(
     mod: ModuleType,
     bfqsn: str,
     shm: ShmArray,
+    timeframe: float,
 
     last_tsdb_dt: Optional[datetime] = None,
     storage: Optional[Storage] = None,
@@ -262,11 +265,19 @@ async def start_backfill(
 
 ) -> int:
 
+    hist: Callable[
+        [int, datetime, datetime],
+        tuple[np.ndarray, str]
+    ]
+    config: dict[str, int]
     async with mod.open_history_client(bfqsn) as (hist, config):
 
         # get latest query's worth of history all the way
         # back to what is recorded in the tsdb
-        array, start_dt, end_dt = await hist(end_dt=None)
+        array, start_dt, end_dt = await hist(
+            timeframe,
+            end_dt=None,
+        )
 
         times = array['time']
 
@@ -289,6 +300,9 @@ async def start_backfill(
         log.info(f'Pushing {to_push.size} to shm!')
         shm.push(to_push)
 
+        # TODO: *** THIS IS A BUG ***
+        # we need to only broadcast to subscribers for this fqsn..
+        # otherwise all fsps get reset on every chart..
         for delay_s in sampler.subscribers:
             await broadcast(delay_s)
 
@@ -304,8 +318,8 @@ async def start_backfill(
                 raise ValueError(
                     '`piker` only needs to support 1m and 1s sampling '
                     'but ur api is trying to deliver a longer '
-                    f'timeframe of {step_size_s} ' 'seconds.. so ye, dun '
-                    'do dat brudder.'
+                    f'timeframe of {step_size_s} seconds..\n'
+                    'So yuh.. dun do dat brudder.'
                 )
 
             # when no tsdb "last datum" is provided, we just load
@@ -319,96 +333,60 @@ async def start_backfill(
                 # do a decently sized backfill and load it into storage.
                 periods = {
                     1: {'days': 6},
-                    60: {'years': 2},
+                    60: {'years': 6},
                 }
 
             kwargs = periods[step_size_s]
             last_tsdb_dt = start_dt.subtract(**kwargs)
 
         # configure async query throttling
-        erlangs = config.get('erlangs', 1)
-        rate = config.get('rate', 1)
-        frames = {}
-
-        def iter_dts(start: datetime):
-
-            while True:
-
-                hist_period = pendulum.period(
-                    start,
-                    last_tsdb_dt,
-                )
-                dtrange = list(hist_period.range('seconds', frame_size_s))
-                log.debug(f'New datetime index:\n{pformat(dtrange)}')
-
-                for end_dt in dtrange:
-                    log.info(f'Yielding next frame start {end_dt}')
-                    start = yield end_dt
-
-                    # if caller sends a new start date, reset to that
-                    if start is not None:
-                        log.warning(f'Resetting date range: {start}')
-                        break
-                else:
-                    # from while
-                    return
-
-        # pull new history frames until we hit latest
-        # already in the tsdb or a max count.
-        count = 0
-
-        # NOTE: when gaps are detected in the retreived history (by
-        # comparisor of the end - start versus the expected "frame size"
-        # in seconds) we need a way to alert the async request code not
-        # to continue to query for data "within the gap". This var is
-        # set in such cases such that further requests in that period
-        # are discarded and further we reset the "datetimem query frame
-        # index" in such cases to avoid needless noop requests.
-        earliest_end_dt: Optional[datetime] = start_dt
-
-        async def get_ohlc_frame(
-            input_end_dt: datetime,
-            iter_dts_gen: Generator[datetime],
-
-        ) -> np.ndarray:
-
-            nonlocal count, frames, earliest_end_dt, frame_size_s
-            count += 1
-
-            if input_end_dt > earliest_end_dt:
-                # if a request comes in for an inter-gap frame we
-                # discard it since likely this request is still
-                # lingering from before the reset of ``iter_dts()`` via
-                # ``.send()`` below.
-                log.info(f'Discarding request history ending @ {input_end_dt}')
-
-                # signals to ``trimeter`` loop to discard and
-                # ``continue`` in it's schedule loop.
-                return None
+        # rate = config.get('rate', 1)
+        # XXX: legacy from ``trimeter`` code but unsupported now.
+        # erlangs = config.get('erlangs', 1)
 
+        # inline sequential loop where we simply pass the
+        # last retrieved start dt to the next request as
+        # it's end dt.
+        starts: set[datetime] = set()
+        while start_dt > last_tsdb_dt:
             try:
                 log.info(
-                    f'Requesting {step_size_s}s frame ending in {input_end_dt}'
+                    f'Requesting {step_size_s}s frame ending in {start_dt}'
                 )
-                array, start_dt, end_dt = await hist(end_dt=input_end_dt)
+                array, next_start_dt, end_dt = await hist(
+                    timeframe,
+                    end_dt=start_dt,
+                )
+
+                if next_start_dt in starts:
+                    start_dt = min(starts)
+                    print("SKIPPING DUPLICATE FRAME @ {next_start_dt}")
+                    continue
+
+                # only update new start point if new
+                start_dt = next_start_dt
+                starts.add(start_dt)
+
                 assert array['time'][0] == start_dt.timestamp()
 
             except NoData:
+                # XXX: unhandled history gap (shouldn't happen?)
                 log.warning(
-                    f'NO DATA for {frame_size_s}s frame @ {input_end_dt} ?!?'
+                    f'NO DATA for {frame_size_s}s frame @ {start_dt} ?!?'
                 )
-                return None  # discard signal
+                await tractor.breakpoint()
 
-            except DataUnavailable as duerr:
-                # broker is being a bish and we can't pull
-                # any more..
-                log.warning('backend halted on data deliver !?!?')
+            except DataUnavailable:  # as duerr:
+                # broker is being a bish and we can't pull any more..
+                log.warning(
+                    f'NO-MORE-DATA: backend {mod.name} halted history!?'
+                )
 
                 # ugh, what's a better way?
                 # TODO: fwiw, we probably want a way to signal a throttle
                 # condition (eg. with ib) so that we can halt the
                 # request loop until the condition is resolved?
-                return duerr
+                return
 
             diff = end_dt - start_dt
             frame_time_diff_s = diff.seconds
@@ -419,42 +397,12 @@ async def start_backfill(
                 # XXX: query result includes a start point prior to our
                 # expected "frame size" and thus is likely some kind of
                 # history gap (eg. market closed period, outage, etc.)
-                # so indicate to the request loop that this gap is
-                # expected by both,
-                # - resetting the ``iter_dts()`` generator to start at
-                #   the new start point delivered in this result
-                # - setting the non-locally scoped ``earliest_end_dt``
-                #   to this new value so that the request loop doesn't
-                #   get tripped up thinking there's an out of order
-                #   request-result condition.
-
+                # so just report it to console for now.
                 log.warning(
                     f'History frame ending @ {end_dt} appears to have a gap:\n'
                     f'{diff} ~= {frame_time_diff_s} seconds'
                 )
 
-                # reset dtrange gen to new start point
-                try:
-                    next_end = iter_dts_gen.send(start_dt)
-                    log.info(
-                        f'Reset frame index to start at {start_dt}\n'
-                        f'Was at {next_end}'
-                    )
-
-                    # NOTE: manually set "earliest end datetime" index-value
-                    # to avoid the request loop getting confused about
-                    # new frames that are earlier in history - i.e. this
-                    # **is not** the case of out-of-order frames from
-                    # an async batch request.
-                    earliest_end_dt = start_dt
-
-                except StopIteration:
-                    # gen already terminated meaning we probably already
-                    # exhausted it via frame requests.
-                    log.info(
-                        "Datetime index already exhausted, can't reset.."
-                    )
-
             to_push = diff_history(
                 array,
                 start_dt,
@@ -464,194 +412,53 @@ async def start_backfill(
             ln = len(to_push)
             if ln:
                 log.info(f'{ln} bars for {start_dt} -> {end_dt}')
-                frames[input_end_dt.timestamp()] = (to_push, start_dt, end_dt)
-                return to_push, start_dt, end_dt
 
             else:
                 log.warning(
                     f'{ln} BARS TO PUSH after diff?!: {start_dt} -> {end_dt}'
                 )
-                return None
 
-        # initial dt index starts at the start of the first query result
-        idts = iter_dts(start_dt)
+            # bail gracefully on shm allocation overrun/full condition
+            try:
+                shm.push(to_push, prepend=True)
+            except ValueError:
+                log.info(
+                    f'Shm buffer overrun on: {start_dt} -> {end_dt}?'
+                )
+                break
 
-        async with trimeter.amap(
-            partial(
-                get_ohlc_frame,
-                # we close in the ``iter_dt()`` gen in so we can send
-                # reset signals as needed for gap dection in the
-                # history.
-                iter_dts_gen=idts,
-            ),
-            idts,
+            log.info(
+                f'Shm pushed {ln} frame:\n'
+                f'{start_dt} -> {end_dt}'
+            )
 
-            capture_outcome=True,
-            include_value=True,
+            if (
+                storage is not None
+                and write_tsdb
+            ):
+                log.info(
+                    f'Writing {ln} frame to storage:\n'
+                    f'{start_dt} -> {end_dt}'
+                )
+                await storage.write_ohlcv(
+                    f'{bfqsn}.{mod.name}',  # lul..
+                    to_push,
+                    timeframe,
+                )
 
-            # better technical names bruv...
-            max_at_once=erlangs,
-            max_per_second=rate,
+        # TODO: can we only trigger this if the respective
+        # history in "in view"?!?
 
-        ) as outcomes:
-
-            # Then iterate over the return values, as they become available
-            # (i.e., not necessarily in the original order)
-            async for input_end_dt, outcome in outcomes:
-
-                try:
-                    out = outcome.unwrap()
-
-                    if out is None:
-                        # skip signal
-                        continue
-
-                    elif isinstance(out, DataUnavailable):
-                        # no data available case signal.. so just kill
-                        # further requests and basically just stop
-                        # trying...
-                        break
-
-                except Exception:
-                    log.exception('uhh trimeter bail')
-                    raise
-                else:
-                    to_push, start_dt, end_dt = out
-
-                if not len(to_push):
-                    # diff returned no new data (i.e. we probablyl hit
-                    # the ``last_tsdb_dt`` point).
-                    # TODO: raise instead?
-                    log.warning(f'No history for range {start_dt} -> {end_dt}')
-                    continue
-
-                # pipeline-style pull frames until we need to wait for
-                # the next in order to arrive.
-                # i = end_dts.index(input_end_dt)
-                # print(f'latest end_dt {end_dt} found at index {i}')
-
-                epochs = list(reversed(sorted(frames)))
-                for epoch in epochs:
-
-                    start = shm.array['time'][0]
-                    last_shm_prepend_dt = pendulum.from_timestamp(start)
-                    earliest_frame_queue_dt = pendulum.from_timestamp(epoch)
-
-                    diff = start - epoch
-
-                    if diff < 0:
-                        log.warning(
-                            'Discarding out of order frame:\n'
-                            f'{earliest_frame_queue_dt}'
-                        )
-                        frames.pop(epoch)
-                        continue
-
-                    if diff > step_size_s:
-
-                        if earliest_end_dt < earliest_frame_queue_dt:
-                            # XXX: an expected gap was encountered (see
-                            # logic in ``get_ohlc_frame()``, so allow
-                            # this frame through to the storage layer.
-                            log.warning(
-                                f'Expected history gap of {diff}s:\n'
-                                f'{earliest_frame_queue_dt} <- '
-                                f'{earliest_end_dt}'
-                            )
-
-                        elif (
-                            erlangs > 1
-                        ):
-                            # we don't yet have the next frame to push
-                            # so break back to the async request loop
-                            # while we wait for more async frame-results
-                            # to arrive.
-                            if len(frames) >= erlangs:
-                                log.warning(
-                                    'Frame count in async-queue is greater '
-                                    'then erlangs?\n'
-                                    'There seems to be a gap between:\n'
-                                    f'{earliest_frame_queue_dt} <- '
-                                    f'{last_shm_prepend_dt}\n'
-                                    'Conducting manual call for frame ending: '
-                                    f'{last_shm_prepend_dt}'
-                                )
-                                (
-                                    to_push,
-                                    start_dt,
-                                    end_dt,
-                                ) = await get_ohlc_frame(
-                                    input_end_dt=last_shm_prepend_dt,
-                                    iter_dts_gen=idts,
-                                )
-                                last_epoch = to_push['time'][-1]
-                                diff = start - last_epoch
-
-                                if diff > step_size_s:
-                                    await tractor.breakpoint()
-                                    raise DataUnavailable(
-                                        'An awkward frame was found:\n'
-                                        f'{start_dt} -> {end_dt}:\n{to_push}'
-                                    )
-
-                                else:
-                                    frames[last_epoch] = (
-                                        to_push, start_dt, end_dt)
-                                    break
-
-                            expect_end = pendulum.from_timestamp(start)
-                            expect_start = expect_end.subtract(
-                                seconds=frame_size_s)
-                            log.warning(
-                                'waiting on out-of-order history frame:\n'
-                                f'{expect_end - expect_start}'
-                            )
-                            break
-
-                    to_push, start_dt, end_dt = frames.pop(epoch)
-                    ln = len(to_push)
-
-                    # bail gracefully on shm allocation overrun/full condition
-                    try:
-                        shm.push(to_push, prepend=True)
-                    except ValueError:
-                        log.info(
-                            f'Shm buffer overrun on: {start_dt} -> {end_dt}?'
-                        )
-                        break
-
-                    log.info(
-                        f'Shm pushed {ln} frame:\n'
-                        f'{start_dt} -> {end_dt}'
-                    )
-                    # keep track of most recent "prepended" ``start_dt``
-                    # both for detecting gaps and ensuring async
-                    # frame-result order.
-                    earliest_end_dt = start_dt
-
-                    if (
-                        storage is not None
-                        and write_tsdb
-                    ):
-                        log.info(
-                            f'Writing {ln} frame to storage:\n'
-                            f'{start_dt} -> {end_dt}'
-                        )
-                        await storage.write_ohlcv(
-                            f'{bfqsn}.{mod.name}',  # lul..
-                            to_push,
-                        )
-
-                # TODO: can we only trigger this if the respective
-                # history in "in view"?!?
-                # XXX: extremely important, there can be no checkpoints
-                # in the block above to avoid entering new ``frames``
-                # values while we're pipelining the current ones to
-                # memory...
-                for delay_s in sampler.subscribers:
-                    await broadcast(delay_s)
+        # XXX: extremely important, there can be no checkpoints
+        # in the block above to avoid entering new ``frames``
+        # values while we're pipelining the current ones to
+        # memory...
+        for delay_s in sampler.subscribers:
+            await broadcast(delay_s)
 
+        # short-circuit (for now)
         bf_done.set()
+        return
 
 
 async def manage_history(
@@ -660,6 +467,7 @@ async def manage_history(
     fqsn: str,
     some_data_ready: trio.Event,
     feed_is_live: trio.Event,
+    timeframe: float = 60,  # in seconds
 
     task_status: TaskStatus = trio.TASK_STATUS_IGNORED,
 
@@ -683,10 +491,10 @@ async def manage_history(
         readonly=False,
     )
     # TODO: history validation
-    if not opened:
-        raise RuntimeError(
-            "Persistent shm for sym was already open?!"
-        )
+    # if not opened:
+    #     raise RuntimeError(
+    #         "Persistent shm for sym was already open?!"
+    #     )
 
     rt_shm, opened = maybe_open_shm_array(
         key=f'{fqsn}_rt',
@@ -698,10 +506,10 @@ async def manage_history(
         readonly=False,
         size=3*_secs_in_day,
     )
-    if not opened:
-        raise RuntimeError(
-            "Persistent shm for sym was already open?!"
-        )
+    # if not opened:
+    #     raise RuntimeError(
+    #         "Persistent shm for sym was already open?!"
+    #     )
 
     log.info('Scanning for existing `marketstored`')
 
@@ -726,7 +534,10 @@ async def manage_history(
             # shm backfiller approach below.
 
             # start history anal and load missing new data via backend.
-            series, _, last_tsdb_dt = await storage.load(fqsn)
+            series, _, last_tsdb_dt = await storage.load(
+                fqsn,
+                timeframe=timeframe,
+            )
 
             broker, symbol, expiry = unpack_fqsn(fqsn)
             (
@@ -739,6 +550,7 @@ async def manage_history(
                     mod,
                     bfqsn,
                     hist_shm,
+                    timeframe=timeframe,
                     last_tsdb_dt=last_tsdb_dt,
                     tsdb_is_up=True,
                     storage=storage,
@@ -769,7 +581,6 @@ async def manage_history(
             else:
                 dt_diff_s = 0
 
-            # await trio.sleep_forever()
             # TODO: see if there's faster multi-field reads:
             # https://numpy.org/doc/stable/user/basics.rec.html#accessing-multiple-fields
             # re-index  with a `time` and index field
@@ -804,6 +615,7 @@ async def manage_history(
                     series = await storage.read_ohlcv(
                         fqsn,
                         end=end,
+                        timeframe=timeframe,
                     )
                     history = list(series.values())
                     fastest = history[0]
@@ -856,6 +668,7 @@ async def manage_history(
                 mod,
                 bfqsn,
                 hist_shm,
+                timeframe=timeframe,
             )
         )
 

piker/data/marketstore.py

@@ -387,6 +387,7 @@ class Storage:
     async def load(
         self,
         fqsn: str,
+        timeframe: int,
 
     ) -> tuple[
         dict[int, np.ndarray],  # timeframe (in secs) to series
@@ -400,12 +401,16 @@ class Storage:
             # on first load we don't need to pull the max
             # history per request size worth.
             limit=3000,
+            timeframe=timeframe,
         )
         log.info(f'Loaded tsdb history {tsdb_arrays}')
 
-        if tsdb_arrays:
-            fastest = list(tsdb_arrays.values())[0]
-            times = fastest['Epoch']
+        if len(tsdb_arrays):
+            # fastest = list(tsdb_arrays.values())[0]
+            # slowest = list(tsdb_arrays.values())[-1]
+            hist = tsdb_arrays[timeframe]
+
+            times = hist['Epoch']
             first, last = times[0], times[-1]
             first_tsdb_dt, last_tsdb_dt = map(
                 pendulum.from_timestamp, [first, last]
@@ -420,9 +425,9 @@ class Storage:
         end: Optional[int] = None,
         limit: int = int(800e3),
 
-    ) -> tuple[
-        MarketstoreClient,
-        Union[dict, np.ndarray]
+    ) -> dict[
+        int,
+        Union[dict, np.ndarray],
     ]:
         client = self.client
         syms = await client.list_symbols()
@@ -430,7 +435,8 @@ class Storage:
         if fqsn not in syms:
             return {}
 
-        tfstr = tf_in_1s[1]
+        # use the provided timeframe or 1s by default
+        tfstr = tf_in_1s.get(timeframe, tf_in_1s[1])
 
         params = Params(
             symbols=fqsn,
@@ -463,39 +469,52 @@ class Storage:
                 return {}
 
         else:
-            result = await client.query(params)
+            params.set('timeframe', tfstr)
+            try:
+                result = await client.query(params)
+            except purerpc.grpclib.exceptions.UnknownError:
+                # indicate there is no history for this timeframe
+                return {}
+
+        # Fill out a `numpy` array-results map keyed by timeframe
+        arrays = {}
 
         # TODO: it turns out column access on recarrays is actually slower:
         # https://jakevdp.github.io/PythonDataScienceHandbook/02.09-structured-data-numpy.html#RecordArrays:-Structured-Arrays-with-a-Twist
         # it might make sense to make these structured arrays?
-        # Fill out a `numpy` array-results map
-        arrays = {}
         for fqsn, data_set in result.by_symbols().items():
             arrays.setdefault(fqsn, {})[
                 tf_in_1s.inverse[data_set.timeframe]
             ] = data_set.array
 
-        return arrays[fqsn][timeframe] if timeframe else arrays[fqsn]
+        return arrays[fqsn]
 
     async def delete_ts(
         self,
         key: str,
         timeframe: Optional[Union[int, str]] = None,
+        fmt: str = 'OHLCV',
 
     ) -> bool:
 
         client = self.client
         syms = await client.list_symbols()
         print(syms)
-        # if key not in syms:
-        #     raise KeyError(f'`{fqsn}` table key not found?')
+        if key not in syms:
+            raise KeyError(f'`{key}` table key not found in\n{syms}?')
 
-        return await client.destroy(tbk=key)
+        tbk = mk_tbk((
+            key,
+            tf_in_1s.get(timeframe, tf_in_1s[60]),
+            fmt,
+        ))
+        return await client.destroy(tbk=tbk)
 
     async def write_ohlcv(
         self,
         fqsn: str,
         ohlcv: np.ndarray,
+        timeframe: int,
         append_and_duplicate: bool = True,
         limit: int = int(800e3),
 
@@ -525,7 +544,7 @@ class Storage:
             # write to db
             resp = await self.client.write(
                 to_push,
-                tbk=f'{fqsn}/1Sec/OHLCV',
+                tbk=f'{fqsn}/{tf_in_1s[timeframe]}/OHLCV',
 
                 # NOTE: will will append duplicates
                 # for the same timestamp-index.
@@ -577,6 +596,7 @@ class Storage:
     # def delete_range(self, start_dt, end_dt) -> None:
     #     ...
 
+
 @acm
 async def open_storage_client(
     fqsn: str,
@@ -642,7 +662,7 @@ async def tsdb_history_update(
     ):
         profiler(f'opened feed for {fqsn}')
 
-        to_append = feed.shm.array
+        to_append = feed.hist_shm.array
         to_prepend = None
 
         if fqsn:
@@ -651,7 +671,7 @@ async def tsdb_history_update(
                 fqsn = symbol.front_fqsn()
 
             # diff db history with shm and only write the missing portions
-            ohlcv = feed.shm.array
+            ohlcv = feed.hist_shm.array
 
             # TODO: use pg profiler
             tsdb_arrays = await storage.read_ohlcv(fqsn)

piker/pp.py

@@ -20,6 +20,7 @@ that doesn't try to cuk most humans who prefer to not lose their moneys..
 (looking at you `ib` and dirt-bird friends)
 
 '''
+from __future__ import annotations
 from contextlib import contextmanager as cm
 from pprint import pformat
 import os
@@ -138,13 +139,31 @@ class Position(Struct):
 
     # ordered record of known constituent trade messages
     clears: dict[
-        Union[str, int, Status],  # trade id
+        str | int,  # trade id
         dict[str, Any],  # transaction history summaries
     ] = {}
     first_clear_dt: Optional[datetime] = None
 
     expiry: Optional[datetime] = None
 
+    # @property
+    # def clears(self) -> dict[
+    #     Union[str, int, Status],  # trade id
+    #     dict[str, Any],  # transaction history summaries
+    # ]:
+    #     '''
+    #     Datetime sorted reference to internal clears table.
+
+    #     '''
+    #     # self._clears = {}
+    #     self._clears = dict(sorted(
+    #         self._clears.items(),
+    #         key=lambda entry: entry[1]['dt'],
+    #     ))
+    #         # self._clears[k] = v
+
+    #     return self._clears
+
     def to_dict(self) -> dict:
         return {
             f: getattr(self, f)
@@ -219,6 +238,10 @@ class Position(Struct):
 
         '''
         clears = list(self.clears.values())
+        if not clears:
+            log.warning(f'No clears table for {self.symbol}!?')
+            return
+
         self.first_clear_dt = min(list(entry['dt'] for entry in clears))
         last_clear = clears[-1]
 
@@ -623,6 +646,7 @@ class PpTable(Struct):
 
     def to_toml(
         self,
+        min_clears: bool = True,
     ) -> dict[str, Any]:
 
         active, closed = self.dump_active()
@@ -635,7 +659,9 @@ class PpTable(Struct):
 
             # keep the minimal amount of clears that make up this
             # position since the last net-zero state.
-            pos.minimize_clears()
+            if min_clears:
+                pos.minimize_clears()
+
             pos.ensure_state()
 
             # serialize to pre-toml form
@@ -682,6 +708,8 @@ def load_pps_from_ledger(
     brokername: str,
     acctname: str,
 
+    table: Optional[PpTable] = None,
+
     # post normalization filter on ledger entries to be processed
     filter_by: Optional[list[dict]] = None,
 
@@ -698,7 +726,6 @@ def load_pps_from_ledger(
     '''
     with (
         open_trade_ledger(brokername, acctname) as ledger,
-        open_pps(brokername, acctname) as table,
     ):
         if not ledger:
             # null case, no ledger file with content
@@ -716,7 +743,11 @@ def load_pps_from_ledger(
         else:
             records = src_records
 
-        updated = table.update_from_trans(records)
+        if table is None:
+            with open_pps(brokername, acctname) as table:
+                updated = table.update_from_trans(records)
+        else:
+            updated = table.update_from_trans(records)
 
     return records, updated
 
@@ -886,15 +917,27 @@ def open_pps(
         conf=conf,
     )
 
+    # first pass populate all missing clears record tables
+    # for fqsn, entry in pps.items():
+    #     # convert clears sub-tables (only in this form
+    #     # for toml re-presentation) back into a master table.
+    #     clears_list = entry.get('clears', [])
+
+    #     # attempt to reload from ledger
+    #     if not clears_list:
+    #         trans, pos = load_pps_from_ledger(
+    #             brokername,
+    #             acctid,
+    #             filter_by=[entry['bsuid']],
+    #             table=table,
+    #         )
+    #         # breakpoint()
+
     # unmarshal/load ``pps.toml`` config entries into object form
     # and update `PpTable` obj entries.
     for fqsn, entry in pps.items():
         bsuid = entry['bsuid']
 
-        # convert clears sub-tables (only in this form
-        # for toml re-presentation) back into a master table.
-        clears_list = entry['clears']
-
         # index clears entries in "object" form by tid in a top
         # level dict instead of a list (as is presented in our
         # ``pps.toml``).
@@ -906,6 +949,18 @@ def open_pps(
         # processing of new clear events.
         trans: list[Transaction] = []
 
+        # convert clears sub-tables (only in this form
+        # for toml re-presentation) back into a master table.
+        clears_list = entry['clears']
+
+        # # attempt to reload from ledger
+        # if not clears_list:
+        #     trans, pos = load_pps_from_ledger(
+        #         brokername,
+        #         acctid,
+        #         table=table,
+        #     )
+
         for clears_table in clears_list:
             tid = clears_table.pop('tid')
             dtstr = clears_table['dt']

piker/ui/_display.py

@@ -249,14 +249,14 @@ async def graphics_update_loop(
     linked: LinkedSplits = godwidget.rt_linked
     display_rate = godwidget.window.current_screen().refreshRate()
 
-    chart = linked.chart
+    fast_chart = linked.chart
     hist_chart = godwidget.hist_linked.chart
 
     ohlcv = feed.rt_shm
     hist_ohlcv = feed.hist_shm
 
     # update last price sticky
-    last_price_sticky = chart._ysticks[chart.name]
+    last_price_sticky = fast_chart._ysticks[fast_chart.name]
     last_price_sticky.update_from_data(
         *ohlcv.array[-1][['index', 'close']]
     )
@@ -268,7 +268,7 @@ async def graphics_update_loop(
 
     maxmin = partial(
         chart_maxmin,
-        chart,
+        fast_chart,
         ohlcv,
         vlm_chart,
     )
@@ -282,15 +282,15 @@ async def graphics_update_loop(
 
     last, volume = ohlcv.array[-1][['close', 'volume']]
 
-    symbol = chart.linked.symbol
+    symbol = fast_chart.linked.symbol
 
     l1 = L1Labels(
-        chart,
+        fast_chart,
         # determine precision/decimal lengths
         digits=symbol.tick_size_digits,
         size_digits=symbol.lot_size_digits,
     )
-    chart._l1_labels = l1
+    fast_chart._l1_labels = l1
 
     # TODO:
     # - in theory we should be able to read buffer data faster
@@ -300,10 +300,10 @@ async def graphics_update_loop(
     #   levels this might be dark volume we need to
     #   present differently -> likely dark vlm
 
-    tick_size = chart.linked.symbol.tick_size
+    tick_size = fast_chart.linked.symbol.tick_size
     tick_margin = 3 * tick_size
 
-    chart.show()
+    fast_chart.show()
     last_quote = time.time()
     i_last = ohlcv.index
 
@@ -313,7 +313,7 @@ async def graphics_update_loop(
         'maxmin': maxmin,
         'ohlcv': ohlcv,
         'hist_ohlcv': hist_ohlcv,
-        'chart': chart,
+        'chart': fast_chart,
         'last_price_sticky': last_price_sticky,
         'hist_last_price_sticky': hist_last_price_sticky,
         'l1': l1,
@@ -333,7 +333,7 @@ async def graphics_update_loop(
         ds.vlm_chart = vlm_chart
         ds.vlm_sticky = vlm_sticky
 
-    chart.default_view()
+    fast_chart.default_view()
 
     # TODO: probably factor this into some kinda `DisplayState`
     # API that can be reused at least in terms of pulling view
@@ -410,16 +410,16 @@ async def graphics_update_loop(
         last_quote = time.time()
 
         # chart isn't active/shown so skip render cycle and pause feed(s)
-        if chart.linked.isHidden():
+        if fast_chart.linked.isHidden():
             # print('skipping update')
-            chart.pause_all_feeds()
+            fast_chart.pause_all_feeds()
             continue
 
-        ic = chart.view._ic
-        if ic:
-            chart.pause_all_feeds()
-            await ic.wait()
-            chart.resume_all_feeds()
+        # ic = fast_chart.view._ic
+        # if ic:
+        #     fast_chart.pause_all_feeds()
+        #     await ic.wait()
+        #     fast_chart.resume_all_feeds()
 
         # sync call to update all graphics/UX components.
         graphics_update_cycle(ds)
@@ -502,6 +502,7 @@ def graphics_update_cycle(
             or trigger_all
         ):
             chart.increment_view(steps=i_diff)
+            chart.view._set_yrange(yrange=(mn, mx))
 
             if vlm_chart:
                 vlm_chart.increment_view(steps=i_diff)