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authorsemenzato@chromium.org <semenzato@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2013-05-23 12:57:09 +0000
committersemenzato@chromium.org <semenzato@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2013-05-23 12:57:09 +0000
commit95471194b8a58d9a9f0ea25160fa16f2b6b646aa (patch)
tree0b66817a07e976b9992afe3f449c8c8d3d2fd468
parent8945452617709b49c6bb8ccb83d156c46c4c2269 (diff)
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Add CPU thermal throttling histogram for Chrome OS.
BUG=chromium:238890 TEST=none Review URL: https://chromiumcodereview.appspot.com/15587004 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@201770 0039d316-1c4b-4281-b951-d872f2087c98
-rw-r--r--tools/metrics/histograms/histograms.xml10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index da58e4d..2b13bf5 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -5824,6 +5824,16 @@ other types of suffix sets.
</summary>
</histogram>
+<histogram name="Platform.CpuFrequencyThermalScaling" units="percent">
+ <summary>
+ CPU frequency as percent of the baseline frequency, sampled every 30s. This
+ may be throttled down from 100% due to power dissipation issues (too high
+ temperature). It may also be throttled up (turbo), but the kernel does not
+ report the actual turbo frequency, so we put such samples in the 101%
+ bucket.
+ </summary>
+</histogram>
+
<histogram name="Platform.CpuUsage" units="%">
<summary>
Peak total (single core) CPU usage for the last sample interval. The sample