diff --git a/piker/storage/cli.py b/piker/storage/cli.py
index 90d5baed..21032c8b 100644
--- a/piker/storage/cli.py
+++ b/piker/storage/cli.py
@@ -294,6 +294,11 @@ def ldshm(
                             f'Something is wrong with time period for {shm}:\n{times}'
                         )
                 period_s: float = float(max(d1, d2, med))
+                log.info(
+                    f'Processing shm buffer:\n'
+                    f'  file: {shmfile.name}\n'
+                    f'  period: {period_s}s\n'
+                )
 
                 null_segs: tuple = tsp.get_null_segs(
                     frame=shm.array,