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Issue 642350 link

Starred by 1 user
Status: WontFix
Owner:
alancutter@chromium.org
Closed: Nov 2016
Cc:
█ komoroske@chromium.org
erikc...@chromium.org
█ shrike@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug



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Gmail tab taking a lot of CPU

Project Member Reported by pinkerton@chromium.org, Aug 30 2016 
Version:  53.0.2785.70 beta (64-bit)
OS: osx 10.11.x

My long-running gmail tab is was taking 10% CPU for several minutes. Sample attached. Nothing is updating on the screen. It's just sitting there. Now it's returned to normal without me doing anything either. 

So...what was it doing?
sample.txt
164 KB View Download

Comment 1 by komoroske@chromium.org, Aug 30 2016 

I just checked, and I'm seeing this on my machine right now, too.

52.0.2743.116 (Official Build) (64-bit), Chrome OS Pixelv2

Perhaps this was the cause of the problem I G+'d about internally?

https://plus.google.com/101770524855203737699/posts/Wnk8nR3ky6h

Comment 2 by shrike@chromium.org, Aug 30 2016 

There's very little happening in the sample.

Comment 3 by e...@chromium.org, Aug 30 2016

Labels: Needs-Feedback
Could you try to capture a chrome trace next time this happens please?

Comment 4 by pinkerton@chromium.org, Sep 2 2016

Cc: komoroske@chromium.org
It happened again but i didn't get a chance to take a chrome trace. I'll keep an eye out and do it next time.

Comment 5 by dtapu...@chromium.org, Sep 8 2016

Status: WontFix (was: Untriaged)
Nothing actionable at this time. Please re-open with a chrome trace.

Comment 6 by pinkerton@chromium.org, Sep 23 2016

Status: Untriaged (was: WontFix)
Happened again, here's a trace. Reopening.
trace_gmailTrace.json.gz
3.3 MB Download

Comment 7 by pinkerton@chromium.org, Sep 23 2016 

It was render process 17815 in that trace.

Comment 8 by dtapu...@chromium.org, Oct 4 2016

Components: -Blink Blink>Animation
From the trace it seems to be a whole lot of Animations. Setting Blink>Animation for them to investigate the trace. Not sure what is actionable.

Comment 9 by alancutter@chromium.org, Oct 5 2016

Labels: Update-Quarterly
Owner: alancutter@chromium.org
How frequently does this occur?
Is it feasible to leave the animation inspector (https://developers.google.com/web/tools/chrome-devtools/inspect-styles/animations?hl=en) open to capture when the animation starts?

Comment 10 by alancutter@chromium.org, Nov 3 2016

Status: WontFix (was: Untriaged)
Not a lot to be done here without further debugging info I'm afraid. We need to find out what's causing the animations to start in the first place.
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