Constant CPU usage even while firefox is "idle" about yslow HOT 9 OPEN

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

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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%.

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Does the same happen with another Firebug extension rather than YSlow?

@marcelduran

On Thu, May 16, 2013 at 3:48 AM, machixian [email protected] wrote:

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%.

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Reply to this email directly or view it on GitHubhttps://github.com//issues/59#issuecomment-17994035
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from yslow.

@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

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Could you please try uninstalling YSlow and installing any other Firebug
extension just to make sure who (YSlow or Firebug extensions in general) is
causing this increase.

@marcelduran

On Thu, May 16, 2013 at 9:10 AM, machixian [email protected] wrote:

@marcelduran https://github.com/marcelduran No, I have Firebug 1.11.3
installed, idle Firefox cpu usage is below 3%.

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Reply to this email directly or view it on GitHubhttps://github.com//issues/59#issuecomment-18011168
.

from yslow.

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.

from yslow.

Does this 10% stick forever or only during browser/firebug startup?

On Thursday, May 16, 2013, machixian wrote:

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.

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Reply to this email directly or view it on GitHubhttps://github.com//issues/59#issuecomment-18013104
.

@marcelduran

from yslow.

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.

from yslow.

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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