tools/metrics/histograms/histograms.xml - Issue 2625063002: predictors: Add ResourcePrefetchPredictor database readiness histogram.

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

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Issue 2625063002: predictors: Add ResourcePrefetchPredictor database readiness histogram. (Closed)

Patch Set: Update histogram description. Created 3 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 8a133ee1a9f3079e510354276b699b4701a5ce6e..6884b1a77cebfa3d48bb98c8109cb1192fb260b8 100644

--- a/tools/metrics/histograms/histograms.xml

+++ b/tools/metrics/histograms/histograms.xml

@@ -53228,6 +53228,18 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.

</summary>

</histogram>

+<histogram name="ResourcePrefetchPredictor.DatabaseReadiness" units="%">

+ <owner>alexilin@chromium.org</owner>

+ <summary>

+ This metric measures the host coverage of the predictor database: On each

+ navigation, it records what percentage of the top X history entries are

+ found in the predictor DB. Caveats: (1) This metric is only recorded once

+ the user has accumulated enough browsing history, implemented as a minimum

+ threshold of total page visits by the user. (2) This metric is sampled, so

+ it's actually only recorded for 1 out of every K navigations.

+ </summary>

+</histogram>

Deprecated October 2016. No longer recorded.

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