Red Hat Bugzilla – Bug 230294
System generally unresponsive without ShadowFB
Last modified: 2007-11-30 17:11:58 EST
Description of problem: gnome-terminal seems to make the xorg process use 100% of the CPU for a 2-3 seconds when scrolling text such as dmesg. Does not happen with xterm. Fixed when using Option ShadowFB in xorg.conf, although this is obviously non-ideal. Also causes general system slowdown in X applications, but to a lesser degree. Version-Release number of selected component (if applicable): xorg-x11-server-Xorg-1.2.0-6.fc7 How reproducible: On this machine, always. Steps to Reproduce: 1. Install rawhide 2. Open gnome-terminal, type dmesg 3. Watch the CPU usage hit 100% for a couple of seconds on a dual core 1.6GHz machine. Actual results: LOTS of CPU usage, 2 or three seconds. Expected results: A few ms of 0.X% CPU usage. Additional info: hughsie@localhost:~$ opreport -cl --demangle=smart `which Xorg` warning: /usr/bin/Xorg could not be read. CPU: Core Solo / Duo, speed 1662.68 MHz (estimated) Counted CPU_CLK_UNHALTED events (Unhalted clock cycles) with a unit mask of 0x00 (Unhalted core cycles) count 860000 samples % image name symbol name ------------------------------------------------------------------------------- 1582 88.2812 libfb.so fbCompositeSolidMask_nx8888x8888Cmmx 1582 100.000 libfb.so fbCompositeSolidMask_nx8888x8888Cmmx [self] ------------------------------------------------------------------------------- 136 7.5893 libfb.so fbCompositeSrcAdd_8888x8888mmx 136 100.000 libfb.so fbCompositeSrcAdd_8888x8888mmx [self] ------------------------------------------------------------------------------- 65 3.6272 nv_drv.so NVSync 65 100.000 nv_drv.so NVSync [self] ------------------------------------------------------------------------------- 5 0.2790 Xorg (no symbols) 5 100.000 Xorg (no symbols) [self] ------------------------------------------------------------------------------- 2 0.1116 libfb.so fbPolySegment32 2 100.000 libfb.so fbPolySegment32 [self] ------------------------------------------------------------------------------- 1 0.0558 libc-2.5.90.so free 1 100.000 libc-2.5.90.so free [self] ------------------------------------------------------------------------------- 1 0.0558 libfb.so fbSolidFillmmx 1 100.000 libfb.so fbSolidFillmmx [self] -------------------------------------------------------------------------------
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue. Please attach your X server config file (/etc/X11/xorg.conf) and X server log file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link below. Could you please also try to run without any /etc/X11/xorg.conf whatsoever and let X11 autodetect your display and video card? Attach to this bug /var/log/Xorg.0.log from this attempt as well, please. We will review this issue again once you've had a chance to attach this information. Thanks in advance.
No longer a problem with the latest rawhide. Do you still want the logs? Thanks.
Nah, 'salright.