207681 - Browser uses 100% CPU while viewing page (Flash)

Status: RESOLVED WORKSFORME

(Core Graveyard :: Plug-ins, defect)

Description

[Brian Ryner (not reading)]

Current CVS build, MacOS 10.2.6.  Visit the above URL and note that the browser
is taking nearly 100% CPU while the page is visible.  Sampler output seems to
implicate something going on in the plugin code (log coming up).

Comment 1

[Simon Fraser [no longer active]]

We have one or more other 100% Flash CPU usage bugs.

Comment 2

[Brian Ryner (not reading)]

Attachment: sampler log (5 second sample @ 50 ms intervals)

Comment 3

[Denis Heraud]

Mac OS X 10.3.5, Camino 2004101408 (v0.8+), My cpu tops out at 50-60% while the flash file is 
playing and then back to normal. Might not be a perfect example since the flash file only plays for a few 
seconds and then stops. But sites like http://www.anim-fx.com/ cycle the cpu at 30% non-stop.

Comment 4

[Ed Poe]

*** Bug 245400 has been marked as a duplicate of this bug. ***

Comment 5

[Wayne Mery (:wsmwk)]

is this still seen on MAC ?

Comment 6

[Wayne Mery (:wsmwk)]

Oliver, can you test to see if this does still happen on Mac?

Comment 7

[Olivier Cahagne]

Yes, I see 60 to 80% CPU with Firefox 3.0b2 + Flash 9.0.115 on MacOSX 10.5.1.
Then again, I see the same CPU peak on Windows XPSP2 + Firefox 2.0.11 + Flash 9.0.115.
It's likely to be a badly coded Flash applet...

Comment 8

[Cees T.]

The Flash prompt about high CPU usage usually keeps getting in my face enough to make it hard to close or reload the page, but this time on last.fm it only appeared once, after i restored from hibernate, and now my 17 Firefox 3.0.1 windows aren't responding.

It would help if a plugin runs in its own thread so it won't block the main thread. I don't think the issue described at http://groups.google.tt/group/DotNetDevelopment/browse_thread/thread/0fc9d59c82092571/9489d1ed8d7a5faf?lnk=raot should happen between threads.

Bug 156493  maj  P3  All  [e-mail]  NEW   Browser should tolerate plug-in (plugin) malfunctions, like with a separate (own) process  
Bug 230017  enh  --  All  peterlubczynski-bugs@peterl...  NEW   RFE: Run plugins in a separate thread  
Bug 271859  enh  --  Linu  [e-mail]  UNCO   thread support in plugins  

Comment 9

[Cees T.]

I'm on Windows XP Pro 2002 SP2.

Mozilla/5.0 (Windows; U; Windows NT 5.1; nl; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1

Killing and restarting Firefox only restored its last clicked window...

Extensions:
Add Bookmark Here 0.5.8 [DISABLED]
Clean And Close 2.1
FAYT 2.0.4
Firebug 1.2.0b7
Firefox Showcase 0.9.4.8
Flashblock 1.5.6
Java Console 6.0.07
Nightly Tester Tools 2.0.2
Secure Login 0.9.2.8
Session Manager 0.6.1.13
United States English Dictionary 3.0.3
Web Developer 1.1.6

Comment 11

[Wayne Mery (:wsmwk)]

Cees T. do you see the problem with flash 10 and ftp://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-1.9.1/ ?

Comment 12

[Cees T.]

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1b3) Gecko/20090305 Firefox/3.1b3

Firefox on my 2.6 GHz CPU system that's up to 40% idle:
- Normal load: 30-60%
- With Flash visible: 36-90%, 80-90% during fade.

No skips in Foobar nor any loss in UI responsiveness AFAIK.

Comment 13

[Cees T.]

Sorry, that was with Flash 9,0,124,0. Adobe updater doesn't appear to be running.

Extensions: Download Sort 2.5.8, Download Helper 4.3, File Title 1.3, Flash Video Resources Downloader 1.0.2, Flashblock 1.5.10, Java Quick Starter 1.0 [DISABLED], Microsoft .NET Framework Assistant 1.0 [DISABLED], Session Manager 0.6.4.6, Show Go! 1.0.3, Tab Mix Plus 0.3.7.3 [DISABLED], United States English Dictionary 3.0.3

Comment 14

[Cees T.]

Flash 10,0,22,87 on IE8 only makes it use up to 94.44% CPU while fading in view.

A few hours later in Firefox 3.1b3 (restored 56 tabs in 7 windows session)... 

Try this testcase, find that IE8 processes are using all available CPU and 2.14 GB RAM on this 1 GB RAM system, but Firefox process only peaks at 67%.

Rightclick Flash Player 10, About..., the new page kept loading the plugin. Slowness alert: Script: chrome://browser/content/tabbrowser.xml:2810

Alert: A script on this page has been stopped due to a low memory condition.

Alert: A script on this page has been stopped due to a low memory condition.

Crash.

C: with swap file has 3.22 GB free.

Report submitted.

Comment 15

[baker.liam]

Flash 10,0,22,87 on MacOS 10.4.11/PPC causes firefox to use 50-60% cpu
when displaying a few flash ads on a webpage.
it also makes youtube, dailymotion etc. vidoes unwatchable on my imac G5 & ibook G4.
-playback is about 2fps and the audio skips. cpu usage by firefox is 85-90%
ie. all avalible cpu.

happens with all browsers but is worst in firefox.

-Firefox 3.0.11

Comment 16

[Henrik Skupin [:whimboo][⌚️UTC+2]]

That happens on all platforms. I'll cc Michelle to this bug so the Adobe team is aware of this problem.

Comment 18

[Marco Castelluccio [:marco]]

I think this can be now marked as WORKSFORME.

Comment 19

[Wayne Mery (:wsmwk)]

(In reply to Marco Castelluccio from comment #18)
> I think this can be now marked as WORKSFORME.

WFM, 20-30% cpu
 dell vista flash 11,1,102,55 firefox trunk