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

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Issue 760763002: Add startup metrics that measure the performance of the first web contents. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Don't define FirstWebContentsProfiler on Android. Rebase against top of tree. Created 6 years 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 639fcfeec78f196096e33dc98fc1994970c5cf30..8fe8a0cbe685e13113372d4a09d8beda3dcf48ff 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -35437,6 +35437,52 @@ Therefore, the affected-histogram name has to have at least one dot in it.
</summary>
</histogram>
+<histogram
+ name="Startup.Experimental.FirstWebContents.MainFrameLoad.ManyBuckets"
+ units="milliseconds">
+ <owner>erikchen@chromium.org</owner>
+ <summary>
+ An experimental metric only collected on the dev and canary channels.
+ Measure the elapsed time from process launch to the first main frame load of
+ the first web contents. Uses significantly more buckets, with reduced
+ ranges.
+ </summary>
+</histogram>
+
+<histogram
+ name="Startup.Experimental.FirstWebContents.MainFrameLoad.StandardBuckets"
+ units="milliseconds">
+ <owner>erikchen@chromium.org</owner>
+ <summary>
+ An experimental metric only collected on the dev and canary channels.
+ Measure the elapsed time from process launch to the first main frame load of
+ the first web contents. Uses standard bucket ranges.
+ </summary>
+</histogram>
+
+<histogram
+ name="Startup.Experimental.FirstWebContents.NonEmptyPaint.ManyBuckets"
+ units="milliseconds">
+ <owner>erikchen@chromium.org</owner>
+ <summary>
+ An experimental metric only collected on the dev and canary channels.
+ Measure the elapsed time from process launch to the first non-empty paint of
+ the first web contents. Uses significantly more buckets, with reduced
+ ranges.
+ </summary>
+</histogram>
+
+<histogram
+ name="Startup.Experimental.FirstWebContents.NonEmptyPaint.StandardBuckets"
+ units="milliseconds">
+ <owner>erikchen@chromium.org</owner>
+ <summary>
+ An experimental metric only collected on the dev and canary channels.
+ Measure the elapsed time from process launch to the first non-empty paint of
+ the first web contents. Uses standard bucket ranges.
+ </summary>
+</histogram>
+
<histogram name="Startup.Fling.TimeToDisplayVideo" units="milliseconds">
<owner>jeremy@chromium.org</owner>
<summary>
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