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Unified Diff: tools/metrics/histograms/histograms.xml

Issue 2749383003: WorkerThread CPU Load UMA (Closed)
Patch Set: histogram comments Created 3 years, 9 months ago
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Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 31774c7ed82606dfcfe74fdb4a4a19feb94b0f78..bae1141f1dad10708b0542fabeee990eb83f1264 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -80967,6 +80967,18 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
</summary>
</histogram>
+<histogram name="WorkerScheduler.WorkerThreadLoad" units="%">
+ <owner>kinuko@chromium.org</owner>
+ <summary>
+ Worker thread load, i.e. percentage of time spent on running tasks. This
+ metric is emitted at most once per kWorkerThreadLoadTrackerReportingInterval
+ sec per worker thread amortized. E.g. if a worker ran a single task for X
+ seconds and then went to idle for Y seconds before it shuts down, and
+ assuming the interval rate was 1 sec, we get X samples for 100% and Y
+ samples for 0%.
+ </summary>
+</histogram>
+
<histogram name="WorkerThread.DebuggerTask.Time" units="ms">
<owner>nhiroki@chromium.org</owner>
<summary>The time taken for running a debugger task on WorkerThread.</summary>
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