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Improve metrics UI performance (#22691)

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* embed cpu/mem stats into detectors, cameras, and processes

so history consumers don't need the full cpu_usages dict

* support dot-notation for nested keys

to avoid returning large objects when only specific subfields are needed

* fix setLastUpdated being called inside useMemo

this triggered a setState-during-render warning, so moved to a useEffect

* frontend types

* frontend

hide instead of unmount all graphs - re-rendering is much more expensive and disruptive than the amount of dom memory required

keep track of visited tabs to keep them mounted rather than re-mounting or mounting all tabs

add isActive prop to all charts to re-trigger animation when switching metrics tabs

fix chart data padding bug where the loop used number of series rather than number of data points

fix bug where only a shallow copy of the array was used for mutation

fix missing key prop causing console logs

* add isactive after rebase

* formatting

* skip None values in filtered output for dot notation
This commit is contained in:
Josh Hawkins
2026-03-29 11:58:47 -06:00
committed by GitHub
parent f002513d36
commit f44f485f48
10 changed files with 330 additions and 93 deletions
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frigate/stats/util.py
+26
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@@ -498,4 +498,30 @@ def stats_snapshot(
"pid": pid,
}
# Embed cpu/mem stats into detectors, cameras, and processes
# so history consumers don't need the full cpu_usages dict
cpu_usages = stats.get("cpu_usages", {})
for det_stats in stats["detectors"].values():
pid_str = str(det_stats.get("pid", ""))
usage = cpu_usages.get(pid_str, {})
det_stats["cpu"] = usage.get("cpu")
det_stats["mem"] = usage.get("mem")
for cam_stats in stats["cameras"].values():
for pid_key, field in [
("ffmpeg_pid", "ffmpeg_cpu"),
("capture_pid", "capture_cpu"),
("pid", "detect_cpu"),
]:
pid_str = str(cam_stats.get(pid_key, ""))
usage = cpu_usages.get(pid_str, {})
cam_stats[field] = usage.get("cpu")
for proc_stats in stats["processes"].values():
pid_str = str(proc_stats.get("pid", ""))
usage = cpu_usages.get(pid_str, {})
proc_stats["cpu"] = usage.get("cpu")
proc_stats["mem"] = usage.get("mem")
return stats