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

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Issue 1583263002: Experimental CompressibleString UMA (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Adopt lazy-initializing way Created 4 years, 11 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 3c3257bf31d41e8f20cdb3b7555e1d4237075e07..cb839ddfa1dfc80f5a6c9bd40435aa8cf83df69b 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -19979,6 +19979,19 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
</summary>
</histogram>
+<histogram name="Memory.CompressibleStringCount"
+ enum="CompressibleStringCountType">
+ <owner>hajimehoshi@chromium.org</owner>
+ <summary>
+ This records the frequency with which JavaScript source strings are
+ compressed and decompressed in foreground and background tabs. Compressing
+ runs 10 seconds after the tab goes background and decompressing runs when
+ JavaScript source string is required (e.g. V8 starts to compile). This
+ measurement is a preparation to introduce CompressibleString class for
+ JavaScript source strings to reduce Blink memory usage.
+ </summary>
+</histogram>
+
<histogram name="Memory.DiscardableAllocationSize" units="KB">
<owner>reveman@chromium.org</owner>
<summary>
@@ -58923,6 +58936,12 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
<int value="1" label="GPU compositor"/>
</enum>
+<enum name="CompressibleStringCountType" type="int">
+ <int value="0" label="Compressed in a background tab"/>
+ <int value="1" label="Decompressed in a background tab"/>
+ <int value="2" label="Decompressed in a foreground tab"/>
+</enum>
+
<enum name="ComputeCurrentSigninStatus" type="int">
<int value="0" label="Tried to compute current signin status."/>
<int value="1" label="Error: No profiles found."/>
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