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

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Issue 1980743002: Track thread activities in order to diagnose hangs. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@readwrite-mmf
Patch Set: addressed minor review comments; added ownership Created 4 years, 4 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 06532ba140819f137bad3e921a9721d53e544c64..3b205b2f84e94114c33f062d8a89e66a73e89f0c 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -60197,6 +60197,26 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
</summary>
</histogram>
+<histogram name="UMA.ActivityTracker.ThreadTrackers.Count">
Alexei Svitkine (slow) 2016/08/02 21:18:51 Add units= to both of these.
bcwhite 2016/08/04 14:06:20 Done.
+ <owner>bcwhite@chromium.org</owner>
+ <summary>
+ The number of threads being tracked for activities. This value is updated
Alexei Svitkine (slow) 2016/08/02 21:18:51 "tracked for activities" is meaningless to someone
bcwhite 2016/08/04 14:06:20 Done.
+ every time a new thread gets an activity tracked for the first time so will
+ show one count for every permanent thread but multiple counts for a thread
+ than exits and is replaced.
+ </summary>
+</histogram>
+
+<histogram name="UMA.ActivityTracker.ThreadTrackers.MemLimitTrackerCount">
Alexei Svitkine (slow) 2016/08/02 21:18:51 These histograms don't seem to be related to the U
bcwhite 2016/08/04 14:06:20 "Debug.*" okay?
+ <owner>bcwhite@chromium.org</owner>
+ <summary>
+ The limit on the number of thread trackers that could be allocated from the
+ persistent memory segment. Trackers beyond this number were allocated from
+ the heap and thus were not available for analysis. This value is updated on
+ every &quot;memory full&quot; failure.
+ </summary>
+</histogram>
+
<histogram name="UMA.ActualLogUploadInterval" units="minutes">
<owner>asvitkine@chromium.org</owner>
<summary>
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