Bug#651490: Scrolling on Stackoverflow leads to high Xorg CPU usage, and large lag
Anthony DeRobertis
anthony at derobert.net
Fri Dec 9 02:06:22 UTC 2011
Package: iceweasel
Version: 8.0-3+b1
Severity: important
When I visit http://stackoverflow.com/ and hit page down, it takes
around a second to respond—during which time Xorg is pegged at 100% CPU.
I tried upstream's (Mozilla's) x86_64 build, and this does *not* occur.
So something specific to the Debian build causes this.
CPU is Athlon64 4400+. Video is GeForce 7600 GT with nVidia proprietary
drivers (290.10-1). Using E16 window manager, compositing is off.
nVidia TwinView is in use, two LCDs, each 1600x1200.
There is an xtrace of a single page-down on Pastebin
http://pastebin.com/rytnUskS
There is a SE question on this at http://unix.stackexchange.com/q/26234/977
Mozilla amd64 builds can be found at
ftp://ftp.mozilla.org/pub/firefox/releases/8.0.1/linux-x86_64/en-US/
since they seem to like to hide them.
-- Package-specific info:
-- Addons package information
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (500, 'testing'), (130, 'unstable'), (120, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 3.1.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages iceweasel depends on:
ii debianutils 4.0.4
ii fontconfig 2.8.0-3
ii libc6 2.13-21
ii libgdk-pixbuf2.0-0 2.24.0-1
ii libglib2.0-0 2.30.2-4
ii libgtk2.0-0 2.24.8-2
ii libnspr4-0d 4.8.9-1
ii libstdc++6 4.6.2-5
ii procps 1:3.2.8-11
ii xulrunner-8.0 8.0-3+b1
iceweasel recommends no packages.
Versions of packages iceweasel suggests:
ii libgssapi-krb5-2 1.9.1+dfsg-3
ii mathematica-fonts [ttf-mathematica4.1] 13
ii mozplugger <none>
ii ttf-lyx 2.0.1-1
ii ttf-mathematica4.1 13
ii xfonts-mathml 4
Versions of packages xulrunner-8.0 depends on:
ii libasound2 1.0.24.1-4
ii libatk1.0-0 2.2.0-2
ii libbz2-1.0 1.0.5-7
ii libc6 2.13-21
ii libcairo2 1.10.2-6.1
ii libdbus-1-3 1.4.16-1
ii libevent-2.0-5 2.0.16-stable-1
ii libfontconfig1 2.8.0-3
ii libfreetype6 2.4.8-1
ii libgcc1 1:4.6.2-5
ii libgdk-pixbuf2.0-0 2.24.0-1
ii libglib2.0-0 2.30.2-4
ii libgtk2.0-0 2.24.8-2
ii libhunspell-1.3-0 1.3.2-4
ii libjpeg8 8c-2
ii libmozjs8d 8.0-3+b1
ii libnotify4 0.7.4-1
ii libnspr4-0d 4.8.9-1
ii libnss3-1d 3.13.1.with.ckbi.1.88-1
ii libpango1.0-0 1.29.4-2
ii libpixman-1-0 0.24.0-1
ii libreadline6 6.2-8
ii libsqlite3-0 3.7.9-2
ii libstartup-notification0 0.12-1
ii libstdc++6 4.6.2-5
ii libvpx0 0.9.7.p1-2
ii libx11-6 2:1.4.4-4
ii libxext6 2:1.3.0-3
ii libxrender1 1:0.9.6-2
ii libxt6 1:1.1.1-2
ii zlib1g 1:1.2.3.4.dfsg-3
Versions of packages xulrunner-8.0 suggests:
ii libcanberra0 0.28-3
ii libdbus-glib-1-2 0.98-1
ii libgnomeui-0 2.24.5-2
-- no debconf information
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