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

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Issue 495953003: Add a PLT histogram for prerender local predictor prefetches. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase, jkarlin comment 2 Created 6 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 a5abde995d8ff8928986cf3c7c928031598116b6..a044f20556b4f94ee35c4535ccf96f5174affb68 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -23956,6 +23956,18 @@ Therefore, the affected-histogram name has to have at least one dot in it.
</summary>
</histogram>
+<histogram name="Prerender.LocalPredictorPrefetchMatchPLT" units="milliseconds">
+ <owner>tburkard@chromium.org</owner>
+ <summary>
+ The PrerenderLocalPredictor uses local browsing history and the prerender
+ service to predict pages likely visited soon. Some of these URLs are
+ prefetched. When such prefetched likely next pages are visited, this
+ histogram records the PLT for such pages. In particular, this also happens
+ if prefetch is actually disabled, allowing (by pivoting on whether or not
+ prefetch is enabled) to compare the effect of prefetch on PLT.
+ </summary>
+</histogram>
+
<histogram name="Prerender.LocalPredictorServiceLookupTime"
units="milliseconds">
<owner>tburkard@chromium.org</owner>
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