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

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Issue 2874833005: SimpleCache: read small files all at once. (Closed)
Patch Set: One more range check. Created 3 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 1a64d98936e22db63412968a069fa2483ba7300d..159b13c83df97549984d4670e69276bdf103ba9e 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -74126,6 +74126,16 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
<summary>The outcome of Entry::ReadData in the simple cache.</summary>
</histogram>
+<histogram base="true" name="SimpleCache.ReadStream1FromPrefetched"
+ enum="Boolean">
+ <owner>morlovich@chromium.org</owner>
+ <summary>
+ Whether a read from stream 1 was satisfied from prefetch data. Reported only
+ on first read op of entry (including if there are multiple readers, or even
+ some writers).
+ </summary>
+</histogram>
+
<histogram base="true" name="SimpleCache.StaleIndexExtraEntryCount"
units="entries">
<owner>gavinp@chromium.org</owner>
@@ -74208,6 +74218,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
</summary>
</histogram>
+<histogram base="true" name="SimpleCache.SyncOpenDidPrefetch" enum="Boolean">
+ <owner>morlovich@chromium.org</owner>
+ <summary>
+ Whether an attempt was made to prefetch the entire file when opening the
+ entry.
+ </summary>
+</histogram>
+
<histogram base="true" name="SimpleCache.SyncOpenEntryAge" units="hours">
<owner>gavinp@chromium.org</owner>
<summary>
@@ -91203,6 +91221,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
<affected-histogram name="SimpleCache.QueueLatency.OpenEntry"/>
<affected-histogram name="SimpleCache.ReadIsParallelizable"/>
<affected-histogram name="SimpleCache.ReadResult"/>
+ <affected-histogram name="SimpleCache.ReadStream1FromPrefetched"/>
<affected-histogram name="SimpleCache.StaleIndexExtraEntryCount"/>
<affected-histogram name="SimpleCache.StaleIndexMissedEntryCount"/>
<affected-histogram name="SimpleCache.StaleIndexQuality"/>
@@ -91217,6 +91236,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
<affected-histogram name="SimpleCache.SyncCreateResult_WithIndex"/>
<affected-histogram name="SimpleCache.SyncCreateResult_WithoutIndex"/>
<affected-histogram name="SimpleCache.SyncKeySHA256Result"/>
+ <affected-histogram name="SimpleCache.SyncOpenDidPrefetch"/>
<affected-histogram name="SimpleCache.SyncOpenEntryAge"/>
<affected-histogram name="SimpleCache.SyncOpenPlatformFileError"/>
<affected-histogram name="SimpleCache.SyncOpenPlatformFileError_WithIndex"/>
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