tools/metrics/histograms/histograms.xml - Issue 1011093004: metrics: log whether drives have seek penalties (and whether this was determined successfully).

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Issue 1011093004: metrics: log whether drives have seek penalties (and whether this was determined successfully). (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@ssd2

Patch Set: better histograms.xml comments Created 5 years, 9 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 45ab30df9b7a9c0adbc0687ca07a10bb6f9da82f..314439a787a6df982f81a1c661b735d48b2e627b 100644

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

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

@@ -10982,6 +10982,32 @@ Therefore, the affected-histogram name has to have at least one dot in it.

</summary>

</histogram>

+<histogram name="Hardware.Drive.HasSeekPenalty" enum="BooleanHasSeekPenalty">

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

+ <summary>

+ Whether a drive has a seek penalty (i.e. is a spinning disk). Emitted

+ shortly after startup when constructing the initial UMA log.

Mark P 2015/03/18 18:45:46 Please put this last sentence in the other histogr

Dan Beam 2015/03/18 19:19:42 Done.

+ </summary>

+</histogram>

+<histogram name="Hardware.Drive.HasSeekPenalty_Success" enum="BooleanSuccess">

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

+ <summary>

+ Whether it was possible to determine if a drive has a seek penalty. This can

+ fail for various reasons (device drivers don't offer this information, the

+ drive is still mounting, lack of access, etc.).

+ </summary>

+</histogram>

+<histogram name="Hardware.Drive.HasSeekPenalty_Time" units="milliseconds">

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

+ <summary>

+ The amount of time it takes to determine whether a drive has a seek penalty.

+ Recorded every time a drive is queried as to whether it has a seek penalty

+ (currently twice shortly after startup).

Mark P 2015/03/18 18:45:46 Is this last point (recorded twice) true for the o

Dan Beam 2015/03/18 19:19:42 Done.

+ </summary>

+</histogram>

<histogram name="HIDDetection.OOBEDevicesDetectedOnContinuePressed"

enum="HIDContinueScenarioType">

<owner>merkulova@chromium.org</owner>

@@ -45103,6 +45129,11 @@ Therefore, the affected-histogram name has to have at least one dot in it.

</enum>

+<enum name="BooleanHasSeekPenalty" type="int">

+ <int value="0" label="Has no seek penalty (e.g. is flash memory)"/>

+ <int value="1" label="Has seek penalty (e.g. spinning disk)"/>

+</enum>

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