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Issue 630847 link

Starred by 2 users
Status: Archived
Owner: ----
Closed: Aug 14
Cc:
█ tkonch...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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high cpu load in renderer process

Reported by hkskogl...@gmail.com, Jul 23 2016 
UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.21 Safari/537.36

Steps to reproduce the problem:
1. have http://racecenter.letour.fr/#/stageprofile running for several hours

What is the expected behavior?
normal cpu load for renderer process seems like about 4%, when the issue appears its over 100%.

What went wrong?
observing high cpu load for chrome renderer process

Did this work before? N/A 

Chrome version: 53.0.2785.21  Channel: dev
OS Version: fedora 4.5.5-300.fc24.x86_64
Flash Version: Shockwave Flash 22.0 r0
trace_highcpuload.json.gz
4.0 MB Download

Comment 1 by tkonch...@chromium.org, Jul 29 2016

Cc: tkonch...@chromium.org
Labels: Needs-Feedback
Status: Untriaged (was: Unconfirmed)
able to reproduce the issue on Linux 14.04 chrome version 53.0.2785.34 - monitored for 2 hours and the CPU load was 100%

Please find the screenshot

This is working fine in latest dev 54.0.2810.2 - Cpu load was approx below 15

The issue seems to be fixed in later versions. Could you plaese check in latest dev and update the thread with your observations.
Screenshot from 2016-07-29 13:43:50.png
43.3 KB View Download

Comment 2 by hkskogl...@gmail.com, Jul 29 2016 

Yes, it seems fixed in 54.0.2810.2.

Test sampling using pidstat:

pidstat -p {process} 1

53.0.2785.30

Average:    1000     19409   38,99    0,70    0,00   39,69     -  chrome


54.0.2810.2

Average:    1000     22390    6,53    0,92    0,00    7,45     -  chrome


I see regular spikes over 100% in user level code for chrome-53, and this is not happening in chrome-54 (see attached pidstat log files for details).
pidstat-chrome-53.0.2785.30.log
7.6 KB View Download
pidstat-chrome-54.0.2810.2.log
8.5 KB View Download

Comment 3 by ssamanoori@chromium.org, Aug 5 2016

Components: UI>Browser

Comment 4 by robliao@chromium.org, Aug 14

Status: Archived (was: Untriaged)
Archiving old bugs that haven't been modified in over two years. 

If you feel this issue should still be addressed, feel free to reopen it or to file a new issue. Thanks!
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