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Constant CPU usage even while firefox is "idle" #59

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xapaho opened this Issue · 9 comments

4 participants

@xapaho

Constant CPU usage even while firefox is "idle"

Looking at top while firefox is running, but not being used :

  • If YSlow! is installed and enabled, usage is constantly around 4 to 5% minimum, typically 4.3%.
  • If YSlow! is not installed, or installed but disabled, typical cpu usage is 0.3% -- as expected

YSlow 3.1.4
firefox-16.0.2-1.fc16.x86_64

@xapaho

NB. reproduced with a fresh profile and any system plugin disabled just in case, "of course" :s

@machixian

Having the same isssue with Firefox 21.0 and YSlow 3.1.4.

I tried open only one empty tab in Firefox and with only one extension YSlow, top shows Firefox is using about 10% of cpu, after disable YSlow and cpu usage of Firefox is dropped blow 3%.

@marcelduran
Owner
@machixian

@marcelduran No, I have Firebug 1.11.3 installed, idle Firefox cpu usage is below 3%.

BTW: I'm using Mac OS X 10.7.5

@marcelduran
Owner
@machixian

Just install FireFinder, FireQuery and CSS Usage and cpu usage no noticeable change after restart Firefox.

And I enabled YSlow once again, and cpu usage is back to 10% again after restart Firefox.

@marcelduran
Owner
@machixian

The CPU usage I'm talking about is stablized CPU usage, not the CPU usage right after Firefox restarted or Firebug enabled or new page opened.

@blueyed

Same for me, using latest YSlow, Firebug and Firefox 25 on Ubuntu (13.10).
This happens even if YSlow is the only enabled extension (Firebug disabled)!

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