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

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Issue 1898873006: Cronet: Use stale DNS cache entries experimentally. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@dns_stale2
Patch Set: rebase Created 4 years, 7 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 aafa1dc4ba415150e605da6c1b93e96508463bdc..6470ca1c627bfcd5457087dbb3f61897141ba218 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -9203,6 +9203,25 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
</summary>
</histogram>
+<histogram name="DNS.StaleHostResolverRequestOutcome"
+ enum="DNS.StaleHostResolverRequestOutcome">
+ <owner>juliatuttle@chromium.org</owner>
+ <summary>
+ When a DNS request made through StaleHostResolver returns or is canceled,
+ the outcome of the request.
+ </summary>
+</histogram>
+
+<histogram name="DNS.StaleHostResolverStaleDelta"
+ enum="DNS.AddressListDeltaType">
+ <owner>juliatuttle@chromium.org</owner>
+ <summary>
+ When a DNS request made through StaleHostResolver receives results from the
+ network, also had stale cached results, and both results are successful, the
+ difference between the old and new address lists.
+ </summary>
+</histogram>
+
<histogram name="DNS.TotalTime" units="ms">
<owner>juliatuttle@chromium.org</owner>
<summary>
@@ -65922,6 +65941,16 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
<int value="2" label="Updated stale entry"/>
</enum>
+<enum name="DNS.StaleHostResolverRequestOutcome" type="int">
+ <int value="0"
+ label="Returned synchronously (cache, hosts, IP literal etc.)"/>
+ <int value="1" label="Returned network result; no stale result available."/>
+ <int value="2" label="Returned network result; stale result available."/>
+ <int value="3" label="Returned stale result; network was too slow."/>
+ <int value="4" label="Canceled; no stale result available."/>
+ <int value="5" label="Canceled; stale result available."/>
+</enum>
+
<enum name="DNSEmptyAddressListAndNoError" type="int">
<int value="0" label="Error reported or Address List is not empty"/>
<int value="1" label="Success reported but Address List is empty"/>
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