Re: Issue 85502 in chromium: Very high CPU usage by Chrome

[chro...@googlecode.com]

Updates:
Cc: pawli...@chromium.org m...@chromium.org

Comment #1 on issue 85502 by jeff...@google.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Marc, is this similar to what you were talking about?

hey Mark, who can we get to look into this? Maybe someone can take a look
at Colin's machine? (cgibbs@)

thanks,
Jeff

[chro...@googlecode.com]

Updates:
Cc: rse...@chromium.org

Comment #3 on issue 85502 by rse...@chromium.org: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

If you go into Activity Monitor (/Applications/Utilities) and choose Sample
Process (likely the renderer "Google Chrome Renderer") when this happens,
attach the file here. I'm working on a tool to symbolicate these kinds of
logs.

[chro...@googlecode.com]

Comment #4 on issue 85502 by jam...@chromium.org: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Is this mac only? If anyone can repro in MTV-1950 ping me and I'll come
over to take a look.

[chro...@googlecode.com]

Updates:
Status: Assigned
Owner: jam...@chromium.org

Comment #5 on issue 85502 by kar...@google.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

james is going to take a look., thanks james!

[chro...@googlecode.com]

Comment #14 on issue 85502 by pga...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Yes! Google Geniuses! Please explain what is going on here! Same thing is
happening to me!!

[chro...@googlecode.com]

Comment #16 on issue 85502 by satnam.s...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Chrome v13.0.782.215 m on windows 32bit XP SP3

Within the last week im now getting 100% CPU EVERY time I do a search in
google.co.uk
seems to be OK for searches within google.com

I suspect Google modified stuff without telling us !!!! Please resolve ASAP
or revert your changes !!!! Please ;)

[chro...@googlecode.com]

Comment #17 on issue 85502 by xerces9: Very high CPU usage by Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Chrome 13.0.782.218 on Windows XP

In the last weeks I get 100% CPU usage in a page showing the google search
result page.
Usually I do a ctrl-k, enter the search term and press the return key.
The the results appear, but I can not click any of them.
Well I can click, but nothing happens. CPU usage is at 100%.
I can open other tabs.
When I close the offending tab, everything returns to normal.
I am not sure what exactly triggers it. It happens on about every 10th
google search.

[chro...@googlecode.com]

Comment #21 on issue 85502 by ThShdwK...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I dont know if will help... On a site I was working on If I had this in the
css:
@-webkit-keyframes bugfix { from { padding: 0; } to { padding: 0; } }
chrome's cpu usage would peg between 50% and 100%. The above css was to
correct an issue using pseudo selectors + and ~ with classes. see
http://css-tricks.com/8439-webkit-sibling-bug/ for more info.

When I removed @-webkit-keyframes bugfix { from { padding: 0; } to {
padding: 0; } } the CPU issue was resolved. Perhaps this or some other
offending css is causing these CPU spikes.

[chro...@googlecode.com]

Comment #22 on issue 85502 by xer...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Same as in comment 17 , now with version 14.0.835.202

[chro...@googlecode.com]

Comment #23 on issue 85502 by guyd...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

This is happening on Windows, version 14.0.835.202 for approximately the
second day.
Constant High CPU usage regardless of load.

[chro...@googlecode.com]

Comment #24 on issue 85502 by toli...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I'm having the same problem. Windows 7 running v14.0.835.202. I hate the
auto update because it changes things wihtout my permission or knowledge
when Chrome was running fine. This just started.

[chro...@googlecode.com]

Comment #25 on issue 85502 by toli...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Possibly this thread is now taking up this issue? Activity is a bit more
active on this thread:
http://code.google.com/p/chromium/issues/detail?id=68894&q=chrome%20says%20waiting%20for%20cache&sort=-modified&colspec=ID
Stars
Pri Area Feature Type Status Summary Modified Owner Mstone OS

[chro...@googlecode.com]

Comment #28 on issue 85502 by ongchih...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

issue 102666
issue 103388

[chro...@googlecode.com]

Comment #29 on issue 85502 by tomyalma...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I having the same problem. Ubuntu 10.04. Chromium 15.0.874.106 Ubuntu 10.04

[chro...@googlecode.com]

Comment #30 on issue 85502 by artgra...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

i have been watching my cpu monitor and throughout the day, it pegged more
and more. this is win 7 no service pack. i closed tabs and addons and same.
restarted chrome and it is still spiking regularly. NOW on my netbook right
next to it running XP, i do not have the runaway cpu utilization. peaks
around 50% with 4 tabs.

[chro...@googlecode.com]

Comment #31 on issue 85502 by treeder: Very high CPU usage by Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Chrome kills my batter big time, high cpu usage, not sure what causes it.

Ubuntu 11.10
Sony Vaio Z

[chro...@googlecode.com]

Comment #34 on issue 85502 by rviye...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I noticed that there are 3 Chrome tasks in Task Manager.
I have been using Chrome for nearly a year now and started facing issues
recently

[chro...@googlecode.com]

Comment #35 on issue 85502 by expolit...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Google Chrome Renderer is running at 100.6% in one thread and 5.2% and 3.0%
and 1.0 in a few others. I have three Google windows on two monitors each
with 10+ tabs. Is this my problem? Too many tabs? Or is it a Google Chrome
problem?

This dialogue has been going on for over a year with no visible
solution. ???

[chro...@googlecode.com]

Comment #36 on issue 85502 by kkf...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I am using Mac 10.6.8 and Chrome Version 19.0.1084.46. This Chrome Renderer
High CPU usage problems started long time ago and seems that Google not
taking serious steps to solve this problem.

Everytime, I have to kill it in Activity Monitor when the HIGH CPU continue
for long time, this really will wear out the machine and the fans since the
temperature can go up as high as 81C even the both fans are run at very
high rpm.

[chro...@googlecode.com]

Comment #37 on issue 85502 by asvi...@chromium.org: Very high CPU usage
by Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

"high CPU usage" may be caused by any number of things, including faulty
extensions.

If, after disabling extensions, you do experience the issue on specific
sites, please file a new bug mentioning the specific circumstances under
which you saw the issue, which will help us identify the cause.

"Me too" comments on this bug aren't helpful.

[chro...@googlecode.com]

Comment #38 on issue 85502 by kkf...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Hi,

I have no extensions installed .

The specific circumstance is like when I was out for meeting this noon,
everythings are normal, and when I am back 3 hours later (no one has access
to my MBP), I can see the Chrome Renderer has this 100% CPU.

Apparently this is not a new problem which I can see it was traced back to
2010, "me too" comment means Google Chrome staff MUST WORK HARDER to solve
this problem.

Below is an image I captured.

tks
KK

[chro...@googlecode.com]

Comment #39 on issue 85502 by nutty....@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Hello,

Well I have been noticing 100% CPU usage with tabs running flash. Other
browsers seem to run fine with flash content, its only chrome that hogs the
cpu.
Its not just about the cpu hogging, the overload on the laptop fans has
caused the laptop battery life to nosedive besides increasing the noise
level. Buggy software is trashing my hardware.
Really, please you guys need to look into it.

[chro...@googlecode.com]

Comment #40 on issue 85502 by mcbagg...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I've found this happens on certain webpages, usually with some type of
flash elements. Latest example was android.com - the homepage generates
high cpu % from chrome renderer. I use OS X 10.7.4 and Chrome 19.0.1084.54

Sample process of the renderer issue is attached - any help is greatly
appreciated!

Dan.

Attachments:
Sample of Google Chrome Renderer.txt 418 KB

[chro...@googlecode.com]

Comment #41 on issue 85502 by allen...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I've noticed the same issue as everyone since May. I'm not quite as tech
savvy as everyone else, but I think I have repro steps. tldr, I find
Renderer spikes when I'm playing music on songza.fm but am working on
another Desktop on my Mac.

System:
2012 MacBook Air, 256 GB hd, 8 GB ram
Mac OS X v10.7.4
Google Chrome v19.0.1084.56

Extensions:
AdBlock Plus Beta 1.2
Clearly
History Site Blocker
LastPass
Save to Pulse
Send from Gmail
Some marble theme skin from Google

Steps to repro:
1. Open songza.fm in a tab in Desktop 1
2. Find a playlist and play music
3. Open a Desktop 2 on your Mac
4. Open Activity Monitor
5. Watch Google Chrome Renderer jump up to over 100%

If you go back to Desktop 1, you'll see Renderer drop to around 30%. I
dragged Activity Monitor to Desktop 1 to see drop. Drag it back to Desktop
2 and watch it spike. If you pause the music, Renderer drops to below 10%
on both Desktops.

Can't wait to get the fix. Ping me if you need more details.


Attachments:
Sample of Google Chrome Renderer.txt 512 KB

[chro...@googlecode.com]

Comment #42 on issue 85502 by rich...@sciur.us: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Lastest dev version on Mac (21.0.1180.15) is exhibiting the issue of
Renderer jumping to over 100% CPUI usage when visiting most Twitter pages
including TweetDeck, among others. Never done this before.

[chro...@googlecode.com]

Comment #43 on issue 85502 by robert.t...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I started to use Google Doc more often recently and noticed same issue on
OSX Snow lepard 10.6.8, Safari Version 5.1.7 (6534.57.2).

Google Doc on, cpu = 80%, off = 3%

[chro...@googlecode.com]

Comment #44 on issue 85502 by finlayma...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Same issue on:

Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
48GB of RAM
2TB, 1TB HD
Debian GNU/Linux 6.0.5 (squeeze)
Chrome Version 21.0.1180.15 dev

Extensions:
Cloudy Calculator
Google Calendar Checker
Google Mail Checker
Hover Zoom
Reddit Enhancement Suite
RSS Feed Reader
User-Agent Switcher for Chrome

Steps to reproduce:
Open chrome,
Open any of tabs without flash,
CPU usage spikes on all 8 threads to 100% with each of the google chrome
renderer instances in htop showing 40-60% CPU usage (as pictured in
attached screenshot).
Open tabs with flash and CPU usage for the flashplayer jumps up to 300% (as
pictured in second screenshot).


Attachments:
Screenshot-9.png 289 KB
Screenshot-10.png 89.1 KB

[chro...@googlecode.com]

Comment #45 on issue 85502 by valentin...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I can confirm this for Google Docs in particular: having the document list
open (even in a background tab) results in permanent ~80% cpu load on a
Thinkpad X200t using Chromium 18.0.1025.168 (Entwickler-Build 134367 Linux)
Ubuntu 12.04. Disabling all chromium extensions doesn't change the behavior.

[chro...@googlecode.com]

Comment #46 on issue 85502 by finlayma...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I've resolved this issue - it appears to have been due to the java leap
second bug of repute recently.

Quick fix - confirm the bug by checking the output of dmesg for the line:

[10703552.860274] Clock: inserting leap second 23:59:60 UTC

Then just temporarily stop the ntp server-

/etc/init.d/ntp stop
date -s "$(date)"

[chro...@googlecode.com]

Comment #47 on issue 85502 by rich...@sciur.us: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

This is becoming rather annoying. Attaching a sample from MacOS per
comment #3.

Attachments:
Sample of Google Chrome Renderer.txt 156 KB

[chro...@googlecode.com]

Comment #48 on issue 85502 by rich...@sciur.us: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

A clue: disabling the 'Hide Twitter Guff' extension causes the problem to
go away.

[chro...@googlecode.com]

Comment #49 on issue 85502 by tras...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Hi all,

I think this issue could be related to CSS3 based animations. We've been
experimenting with them in a new site build and have found that they 100%
the CPU on Chrome for OSX (including in latest beta build). On Windows we
have zero CPU usage.

I'm guessing that given some of the sites mentioned (twitter etc) that they
have a couple of nice visual tweaks that include CSS3 animation and that's
enough to get this behavior to occur.

I'm *guessing* here that Windows is perhaps being hardware accelerated
whereas the OSX pipeline is not and thus these animations just chew through
the CPU. The FPS on OSX sticks to 30FPS while Windows sits happily at 60FPS
on M21. I don't know enough about Chrome but I'm guessing the 30FPS
limitation could be an additional hint at a software pipeline being used.

I'll try to reduce down our code to get a tight repro. At the moment it
looks like it's mostly caused by having an infinite animation through
keyframes (not other simple one off animations) that causes the problem.

[chro...@googlecode.com]

Comment #50 on issue 85502 by Wardo.D...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Check your Chrome "User Data" directory. I had 65K empty .tmp files on my
XP box. I suspect it was hitting the max # of files in one directory limit
for XP. I deleted those files and the high CPU issue is no longer an issue
for me.

[chro...@googlecode.com]

Comment #51 on issue 85502 by sue.bret...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Regarding comment no 46. Brilliant! You've solved the problem. ....now
please could you translate your fix into instructions for us ordinary
mortals who don't know where to look for things like dmesg and ntp server?
I've been using Macs for nearly 25 years, have only involved an engineer
when lightening struck my home or the fan was faulty. I generally manage to
sort out software problems myself. But I'm not technical ...I need
instructions I can follow please.

I have 17 tabs open in one window. I installed a plugin that disables Flash
unless I say otherwise. It's very annoying having to do that but it has
reduced the activity quite a bit. Not entirely as you can see from my
attached screenshot and sample process.

I abandoned Firefox because it had got so slow. Now I'm thinking of moving
to Safari, but it means giving up extensions I really like using. I would
prefer that Chrome was fixed.

Thanks, Sue

Attachments:
Sample of Google Chrome Renderer.txt 12.0 KB

[chro...@googlecode.com]

Comment #54 on issue 85502 by rse...@chromium.org: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

James, here are some of the reports from this thread. Nothing is really
jumping out at me. Any thoughts?

Attachments:
sample-85502-c40.txt 489 KB
sample-85502-c41.txt 622 KB
sample-85502-c47.txt 172 KB

[chro...@googlecode.com]

Comment #55 on issue 85502 by ed...@8projects.nl: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Having the same issue on my Mac Pro (single quad core CPU), OS X 10.8.
Using latest Chrome (22.0.1221.0 dev).

But only with Google Docs document list pages. CPU between 50% and 98%.
URL: https://drive.google.com/a/8projects.nl/ and another with another
Google Apps domain of mine.

Just made an observation that might be interesting: I usually have two
Google Docs lists open, for two different accounts, both have this high CPU
usage, but the usage is dependent on the number of items in the list.

The first one has around 150 documents in the list, and has CPU usage of
around 75-95% constantly.
The second one has around 80, and has CPU usage of around 55%-75%
constantly.

Now the interesting part: when I do a search in the top box so that no
documents are found, and the list is empty, the CPU usage of both drops to
3.5 - 4%. When I do a search that results in about 25 items, the CPU usage
goes to around 28-32%.

Another thing: if the tab with the document list is active, CPU is 20%
higher than when a different tab is showing (so the one with 150 items is
around 93% when active, and around 65% when not active).

So it seems the CPU usage is related to the number of items in the list,
and whether the tab is visible or not. Could this just be a Docs bug then?
Maybe to do with refreshing the modified date etc. of each item in the doc
list?

I don't have the problem with Twitter pages or Flash like others mentioned,
nor with an open Docs editor page.

[chro...@googlecode.com]

Comment #56 on issue 85502 by ed...@8projects.nl: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Some other observations in addition to my previous comment:

Firefox: CPU usage does not increase at all when showing the Docs document
list.

Safari: CPU usage is also related to number of items in the list:
- full list of 150 items: CPU usage at ~50%
- small list of 25 items: CPU usage at ~19%
- empty list: CPU usage at ~4% (with 10 other tabs open)

And with Safari it does not matter if the tab is visible or not, whereas
with Chrome I see a difference of 20-30%.

Something in the combination WebKit + Docs?

[chro...@googlecode.com]

Comment #57 on issue 85502 by Alex.Los...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Everyone in my office has this very same problem: Google Chrome Renderer
taking 70% of mac's CPU.
Most of them have switched back to Safari or Firefox.
I would prefer to stay Chrome if there is any available straightforward fix.
Thanks

[chro...@googlecode.com]

Comment #58 on issue 85502 by michaels...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Well, brand new MacBook Pro Retina (Quad Core i7 Ivy Bridge processor, 16GB
RAM) has the same problem. Activity monitor shows Google Chrome Renderer
using 299.3% of CPU!

[chro...@googlecode.com]

Comment #59 on issue 85502 by judo...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Google Chrome (that is, the main process, not the renderer) is constantly
using 250% of CPU here on OS X Lion. I'm not sure if it's related to this
issue, but I've attached a process sample from the Activity Monitor if it's
any help.

Attachments:
Sample of Google Chrome.txt 789 KB

[chro...@googlecode.com]

Updates:
Status: Available
Owner: ---

Comment #60 on issue 85502 by jam...@chromium.org: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

(No comment was entered for this change.)

[chro...@googlecode.com]

Comment #61 on issue 85502 by tzvis...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Any ideas for solutions?

[chro...@googlecode.com]

Comment #62 on issue 85502 by d...@thebishopway.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Same here. One tab of gmail is sucking down CPU cycles. I'm running
MBP, Mountain Lion, quad core i7 with 8GB ram.



Attachments:
Screen Shot 2012-08-27 at 4.16.30 PM.png 64.9 KB

[chro...@googlecode.com]

Comment #63 on issue 85502 by fodem...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Hi,

After 5 months, I can see this problem is still in "no man land". Other
than this Chrome Renderer, I think the Shockwave flash running in Chrome
also giving problem. When I visit some sites that using flash, it was OK at
the beginning, however, after some time if I did not close the site, this
Shockwave flash process running wild in the activity windows and I need to
quit it manually.

Can Google developers who responsible to troubleshoot this problem share
with us what they have been doing to nail down these two issues ?

The main problem of these two issues are getting the CPU very high
continuously hence the fan will run at very high speed continuously when
the laptop unattended (it has to run because some processes are still
running like downloading), this will definitely shorten the life of the fan.

[chro...@googlecode.com]

Comment #64 on issue 85502 by zimke.k...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Hi, I came across this thread after experienceing the same issue, a single
chrome renderer process that takes 99% of my CPU. I've attached a process
sample that might help. Also I've found that on my laptop (Macbook Pro
build 10K549, OSX Chrome version: 21.0.1180.89)

What I thought was interesting was any time I visit cs.purdue.edu it
triggers the renderer issue. Thank you for your hard work!

Attachments:
Sample of Google Chrome Renderer.txt 389 KB

[chro...@googlecode.com]

Comment #65 on issue 85502 by jfbo...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Hi.

I'm running chrome canary on a mbp, 8gb ram, osx 10.8.1.

Chrome & Canary both use ~120-200% CPU __ONLY when I'm behind a proxy__. On
a direct connection everything is fine. Could that be useful information?

[chro...@googlecode.com]

Comment #66 on issue 85502 by g...@gindesigns.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

What Chrome does to a MacBook Pro 2.2 GHz INtel core i7 8GB 1333 MHz DDr3
Using OSX 10.6.8

Sampling process 24217 for 3 seconds with 1 millisecond of run time between
samples
Sampling completed, processing symbols...
Analysis of sampling Google Chrome Helper (pid 24217) every 1 millisecond
Call graph:
2586 Thread_1469721 DispatchQueue_1: com.apple.main-thread (serial)
2586 0x17216f55
2586 main
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 pthread_join$UNIX2003
2586 __semwait_signal
2586 Thread_1469724 DispatchQueue_2: com.apple.libdispatch-manager
(serial)
2586 start_wqthread
2586 _pthread_wqthread
2586 _dispatch_worker_thread2
2586 _dispatch_queue_invoke
2586 _dispatch_mgr_invoke
2586 kevent
2586 Thread_1469728: NetworkConfigWatcher
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
2586 CFRunLoopRunInMode
2586 CFRunLoopRunSpecific
2586 __CFRunLoopRun
2586 mach_msg
2586 mach_msg_trap
2586 Thread_1469729: DnsWatcher
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 kevent
2586 Thread_1469730: ServiceProcess_IO
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 kevent
2586 Thread_1469731: ServiceProcess_File
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 kevent
2586 Thread_1469732: NetworkConfigWatcher
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
2586 CFRunLoopRunInMode
2586 CFRunLoopRunSpecific
2586 __CFRunLoopRun
2586 mach_msg
2586 mach_msg_trap
2586 Thread_1469736: Chrome_CloudPrintProxyCoreThread
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 cupsGetDests
2586 cupsGetDests2
2586 cupsFreeDests
2586 cupsDoRequest
2586 cupsDoIORequest
2586 cupsGetResponse
2561 httpUpdate
2511 httpGetLength
2456 httpGets
2375 recv$UNIX2003
2333
recvfrom$UNIX2003
42 recv$UNIX2003
76 httpGets
4 __error
1 _sysenter_trap
53 httpGetLength
1 dyld_stub___error
1
dyld_stub_recv$UNIX2003
50 httpUpdate
25 cupsGetResponse
2586 Thread_1493205: WorkerPool/-1289658368
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 pthread_cond_timedwait$UNIX2003
2586 _pthread_cond_wait
2586 __semwait_signal
2586 Thread_1775789: WorkerPool/-1341509632
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 pthread_cond_timedwait$UNIX2003
2586 _pthread_cond_wait
2586 __semwait_signal
2586 Thread_1796251: WorkerPool/-1341370368
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 pthread_cond_timedwait$UNIX2003
2586 _pthread_cond_wait
2586 __semwait_signal
2586 Thread_1796569: WorkerPool/-1341091840
2586 thread_start
2586 _pthread_start
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 ChromeMain
2586 pthread_cond_timedwait$UNIX2003
2586 _pthread_cond_wait
2586 __semwait_signal

Total number in stack (recursive counted multiple, when >=5):
84 ChromeMain
10 _pthread_start
10 thread_start
5 __semwait_signal

Sort by top of stack, same collapsed (when >= 5):
__semwait_signal 12930
kevent 10344
mach_msg_trap 5172
recvfrom$UNIX2003 2333
httpGets 76
httpGetLength 53
httpUpdate 50
recv$UNIX2003 42
cupsGetResponse 25
Sample analysis of process 24217 written to file /dev/stdout


Attachments:
Sample of Google Chrome Helper10:23:12.txt 7.7 KB

[chro...@googlecode.com]

Comment #67 on issue 85502 by g...@gindesigns.com: Very high CPU usage by

Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

What Chrome does to a MacBook Pro 2.2 GHz INtel core i7 8GB 1333 MHz DDr3

Using OSX 10.6.8, and it goes to 100% CPU Usage.

[chro...@googlecode.com]

Comment #68 on issue 85502 by nashtonh...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I also have this problem. the renderer is always the most CPU-intensive
process running, and in terms of overall CPU time it is double the nearest
process. Using a Mac Pro 3,1; let me know what additional info you need to
help you.

Chrome Version : 23.0.1271.64
OS Version: OS X 10.8.2
URLs (if applicable) :
Other browsers tested:
Add OK or FAIL after other browsers where you have tested this issue:
Safari 5: No issues
Firefox 4.x: No issues
IE 7/8/9: No issues

What steps will reproduce the problem?
Using Chrome for anything creates the issue. The CPU utilisation goes up
the more gdocs and calendar tabs I have going.

What is the expected result?
Low CPU usage

I've attached a screen shot of the Activity Monitor, it shows you how much
CPU time the renderer takes regularly and the overall CPU time.


Attachments:
Screen Shot 2012-11-11 at 09.56.02.pdf 149 KB

[chro...@googlecode.com]

Comment #69 on issue 85502 by pa...@agentpiggy.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I'm having a similar issue, that process is taking 70-80% of CPU, happens
every now and then

Attachments:
Sample of Google Chrome Renderer.txt 1.3 MB

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[chro...@googlecode.com]

Comment #70 on issue 85502 by irtafaha...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I am also having the similar issue, what i found it is due to flash player
i have also checked on internet explorer and firefox with the latest update
but same problem CPU usage 90% mostly and some time its 100%. that happens
since last month i.e 15th jan approx. before that everything was fine,
kindly resolve that issue.

Attachments:
before flash player.png 46.7 KB
after flash player.png 53.5 KB

[chro...@googlecode.com]

Comment #71 on issue 85502 by artgra...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

i had to shut down chrome today after running a site that had flash photo
albums. i shut down one tab at a time, while watching system as above, and
when i shut down tabs with flash, cpu went down to normal. can we just
block flash?

[chro...@googlecode.com]

Comment #72 on issue 85502 by DSc...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Personally, I have all plug-ins set to "Click to play," so they only work
when I want them to. I like that it saves resources and often saves having
to view annoying ads.
http://support.google.com/chrome/bin/answer.py?hl=en&answer=142064

[chro...@googlecode.com]

Comment #73 on issue 85502 by nutty....@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Someone please sue Adobe for burning so many cpu's out... Cant even compute
the amount of damage flash has inflicted...

[chro...@googlecode.com]

Comment #77 on issue 85502 by elprimoc...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

beuler, beuler? Anyone?

[chro...@googlecode.com]

Comment #78 on issue 85502 by eslam.na...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I now keep getting this symtom everyday. The "Google Chrome Renderer"
process takes more than 130% of the multi-core CPU.

[chro...@googlecode.com]

Comment #79 on issue 85502 by danny.ar...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

It's interessting to see that this problem was not solved since two years
now. therefore i decided to move to an other browser because i have the
feeling that nothing really will happen here.

[chro...@googlecode.com]

Updates:
Cc: od...@chromium.org ashej...@chromium.org

Comment #80 on issue 85502 by ashej...@chromium.org: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Issue 162217 has been merged into this issue.

[chro...@googlecode.com]

Comment #81 on issue 85502 by eslam.na...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I open a Facebook home page and leave it in the background for 20 minutes.
Then coming back to it, I experience sluggishness in the scrolling and the
chrome renderer process jumps to 70 ~ 130% and there's no work around but
to kill the tab and open again.

I don't use any extension and I use the latest Adobe flash player. I
replicated the same scenario using incognito mode as well.

[chro...@googlecode.com]

Comment #82 on issue 85502 by mega...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Chrome Version 29.0.1547.57 on Mac and still this issue happens. Browser
Task Manager says that Gmail tab is using 100% cpu. This happens to me with
my Google corporate account, not with the normal Gmail account (both open)

[chro...@googlecode.com]

Updates:
Cc: oyste...@chromium.org

Comment #84 on issue 85502 by to...@chromium.org: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

Could someone who can reproduce this issue please collect a chrome trace,
zip it and attach it to the bug? Instructions:
http://dev.chromium.org/developers/how-tos/trace-event-profiling-tool/recording-tracing-runs

That should give us the info we need to get to the bottom of this.

[chro...@googlecode.com]

Comment #85 on issue 85502 by eslam.na...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I'll try replicating it. One interesting thing I also faced is that when
Google logo was one day animated and using Flash at Google homepage, the
CPU went crazy. Whenever I navigate away from the home page, the CPU
reverts back to normal.

[chro...@googlecode.com]

Comment #86 on issue 85502 by dhel...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I'm getting what I believe is similar behaviour, so attaching my trace.

I am able to clear the error, sometimes for minutes, or sometimes days, by
restarting Chrome.

I get the behaviour on any path within the affected domain, which is a
local dev environment. I also get the same behaviour in Incognito. I do not
get the same behaviour in other browsers.

Attachments:
chrometrace_2013-10-09.txt.gz 3.7 MB

[chro...@googlecode.com]

Comment #87 on issue 85502 by dhel...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

To add to #86, the error does not seem to be clearing by restarting Chrome
as it was yesterday.

[chro...@googlecode.com]

Comment #88 on issue 85502 by p...@quested.net: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

I have the same problem, and it started when I introduced CSS3 animations
in a web app I am developing, specifically one-way keyframes. The high CPU
usage does not occur during the animation, but a few minutes after, when
the web app is idle. I agree with comment #49, that CSS3 animations could
cause this behaviour, but it might be in combination with something else. I
have not been able to isolate one animation that causes it.

I recently found this article which might shed some light into the
problem: "Fixing 100% cpu utilization with CSS animations in Chrome"
(http://blog.wercker.com/2013/10/02/Chrome-css-animation.html)

[chro...@googlecode.com]

Comment #89 on issue 85502 by p...@quested.net: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

100% CPU usage happens almost every time I use Chrome nowadays. I first
noticed it in an AngularJS web app I am developing, but now it happens with
Facebook as well. Sample of Google Chrome renderer when occupying 100% CPU
is attached.

[chro...@googlecode.com]

Updates:
Labels: Cr-Blink-Animation

Comment #90 on issue 85502 by to...@chromium.org: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

dhelyar, very interesting trace. The problem there is that the website with
the title "Central Health" is causing two style recalcs and two layouts
every millisecond. This is pretty much pegging your CPU.

It is possible this is caused by CSS Animations. I'd need the URL of that
website in order to confirm.

[chro...@googlecode.com]

Comment #91 on issue 85502 by DSc...@gmail.com: Very high CPU usage by
Chrome
http://code.google.com/p/chromium/issues/detail?id=85502

As I have mentioned before, essentially the problem comes from Chrome
processing plug-ins. If you set them to "Click to play" (so they only work
when I want/need them to), it prevents this from happening, plus it saves
having to view annoying ads sometimes.
http://support.google.com/chrome/bin/answer.py?hl=en&answer=142064 Follow
the instructions for "Block plug-ins" I have had my computer set like
this for ages and haven't had this problem since.