428342 - CPU pegging/spiking on recent nightlies

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[JD]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9pre) Gecko/2008041004 Minefield/3.0pre
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9pre) Gecko/2008041004 Minefield/3.0pre

Ever since the 4/2/08 nightlies, my Firefox-bin process has been spiking my CPU on linux. Currently it's using about 15-20% CPU for the firefox-bin process where in the past (before 4/2), if i wasn't loading a web page, my CPU usage (for the whole system) would max out at about 10%. I think this is a VERY major bug as it's using 15-20% of my CPU and i have a brand-new CPU, i'd wonder what it's doing to people who are still running on Pentium 4's and slower Core 2 Duo's. I only know it happened between the 3/30 nightly and the 4/2 nightly and i've checked bonsai and i haven't seen a commit that would most likely cause this. 

Reproducible: Always

Comment 1

[Mats Palmgren (inactive)]

It would be very helpful if you can find exactly which build
where it broke first.  Thanks.
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/

Comment 2

[JD]

It was fixed a few days after this bug post.

Comment 3

[Wayne Mery (:wsmwk)]

=> WFM  (unless you know what patched it)