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Issue 828189 link

Starred by 1 user
Status: Started
Owner:
nzolghadr@chromium.org
Cc:
tdres...@chromium.org
skare@chromium.org
isherman@chromium.org
asvitk...@chromium.org
█ rkaplow@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug

Blocking:
issue 640921



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Many Event.Latency.BlockingTime.* histograms are unmapped and using substantial storage/bandwidth

Project Member Reported by wittman@chromium.org, Apr 2 2018 
The following Event.Latency.BlockingTime histograms are not declared in histograms.xml, and combined are in the 99th percentile for size.

Event.Latency.BlockingTime.GestureScrollBeginDefaultAllowed
Event.Latency.BlockingTime.GestureScrollBeginDefaultPrevented
Event.Latency.BlockingTime.GestureScrollUpdateDefaultAllowed
Event.Latency.BlockingTime.GestureScrollUpdateDefaultPrevented
Event.Latency.BlockingTime.MouseDownDefaultPrevented
Event.Latency.BlockingTime.MouseLeaveDefaultAllowed
Event.Latency.BlockingTime.MouseLeaveDefaultPrevented
Event.Latency.BlockingTime.MouseMoveDefaultAllowed
Event.Latency.BlockingTime.MouseMoveDefaultPrevented
Event.Latency.BlockingTime.MouseUpDefaultPrevented
Event.Latency.BlockingTime.MouseWheelDefaultAllowed
Event.Latency.BlockingTime.MouseWheelDefaultPrevented

The histogram names are generated procedurally here: https://cs.chromium.org/chromium/src/content/browser/renderer_host/input/render_widget_host_latency_tracker.cc?rcl=565f5a3f82c45eb2a0da9d56696dbd5e00d8938b&l=216

If these are not needed, please update the logic to exclude their recording. Otherwise please add them to histograms.xml.

Comment 1 by tdres...@chromium.org, Apr 3 2018

Cc: tdres...@chromium.org
Owner: nzolghadr@chromium.org
Navid, would it make sense for you to own some of these input metrics?

Any thoughts on whether these should be removed, or added to histograms.xml?

Comment 2 by wittman@chromium.org, May 18 2018 

Ping.

Can we make a decision on what to do with these histograms and the ones in issue 828188, and take action? They're wasting substantial user bandwidth and UMA resources.

Comment 3 by wittman@chromium.org, May 18 2018

Blocking: 640921

Comment 4 by nzolghadr@chromium.org, May 22 2018

Components: Blink>Input
Status: Started (was: Assigned)
►

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