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Code Issues 5 Pull Requests 7 Packages Projects Releases Wiki Activity

Comment some unneeded PDI optimization flags

chart_trader
Tyler Goodlet 2020-12-26 17:51:01 -05:00
parent cac797a7fc
commit 93e76fa12c
2 changed files with 32 additions and 15 deletions
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44
piker/ui/_chart.py
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@ -550,20 +550,36 @@ class ChartPlotWidget(pg.PlotWidget):
} }
pdi_kwargs.update(_pdi_defaults) pdi_kwargs.update(_pdi_defaults)
# curve = pg.PlotCurveItem(
curve = pg.PlotDataItem( curve = pg.PlotDataItem(
y=data[name], y=data[name],
x=data['index'], x=data['index'],
# antialias=True, # antialias=True,
name=name, name=name,
# XXX: pretty sure this is just more overhead
# on data reads and makes graphics rendering no faster
# clipToView=True,
# TODO: see how this handles with custom ohlcv bars graphics # TODO: see how this handles with custom ohlcv bars graphics
# and/or if we can implement something similar for OHLC graphics # and/or if we can implement something similar for OHLC graphics
# clipToView=True, # autoDownsample=True,
autoDownsample=True, # downsample=60,
downsampleMethod='subsample', # downsampleMethod='subsample',
**pdi_kwargs, **pdi_kwargs,
) )
# XXX: see explanation for differenct caching modes:
# https://stackoverflow.com/a/39410081
# seems to only be useful if we don't re-generate the entire
# QPainterPath every time
# curve.curve.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)
# don't ever use this - it's a colossal nightmare of artefacts
# and is disastrous for performance.
# curve.setCacheMode(QtGui.QGraphicsItem.ItemCoordinateCache)
self.addItem(curve) self.addItem(curve)
# register curve graphics and backing array for name # register curve graphics and backing array for name
@ -689,13 +705,15 @@ class ChartPlotWidget(pg.PlotWidget):
# figure out x-range in view such that user can scroll "off" # figure out x-range in view such that user can scroll "off"
# the data set up to the point where ``_min_points_to_show`` # the data set up to the point where ``_min_points_to_show``
# are left. # are left.
view_len = r - l # view_len = r - l
# TODO: logic to check if end of bars in view # TODO: logic to check if end of bars in view
extra = view_len - _min_points_to_show # extra = view_len - _min_points_to_show
begin = self._ohlc[0]['index'] - extra
# end = len(self._ohlc) - 1 + extra # begin = self._ohlc[0]['index'] - extra
end = self._ohlc[-1]['index'] - 1 + extra
# # end = len(self._ohlc) - 1 + extra
# end = self._ohlc[-1]['index'] - 1 + extra
# XXX: test code for only rendering lines for the bars in view. # XXX: test code for only rendering lines for the bars in view.
# This turns out to be very very poor perf when scaling out to # This turns out to be very very poor perf when scaling out to
@ -1292,11 +1310,11 @@ async def check_for_new_bars(feed, ohlcv, linked_charts):
# current bar) and then either write the current bar manually # current bar) and then either write the current bar manually
# or place a cursor for visual cue of the current time step. # or place a cursor for visual cue of the current time step.
price_chart.update_ohlc_from_array( # price_chart.update_ohlc_from_array(
price_chart.name, # price_chart.name,
ohlcv.array, # ohlcv.array,
just_history=True, # just_history=True,
) # )
# XXX: this puts a flat bar on the current time step # XXX: this puts a flat bar on the current time step
# TODO: if we eventually have an x-axis time-step "cursor" # TODO: if we eventually have an x-axis time-step "cursor"

3
piker/ui/_exec.py
View File

@ -83,8 +83,7 @@ class MainWindow(QtGui.QMainWindow):
"""Cancel the root actor asap. """Cancel the root actor asap.
""" """
# raising KBI seems to get intercepted by by Qt so just use the # raising KBI seems to get intercepted by by Qt so just use the system.
# system.
os.kill(os.getpid(), signal.SIGINT) os.kill(os.getpid(), signal.SIGINT)