[Bug 342923] Re: [i945] (Needs UXA) Kubuntu Jaunty Intel 945 GM - Poor sluggish graphics performance in Kate text, etc.
zoombat at runbox.com
Thu Apr 30 11:14:10 UTC 2009
As Tom pointed out, fixing the MTRR range does not require installation
of the experimental kernel.
Also, the MTRR fix is (AFAIK) to improve EXA performance (by allowing
DRI1 to correctly do write-combining), and you were clearly running UXA
as per the log you posted. Also you need to remember that restarting X
resets the MTRR ranges.
I'm working on a script to automate the process so that it can be easily
included in xinit. (it extracts the base address and memory size and
then does the appropriate echo)
As for glxgears, the only thing it indicates is how quickly the
framebuffer can be refreshed (as there is no real drawing going on), it
doesn't say anything about real-world performance, unless DRI is simply
not working and glxgears runs with a framerate below your screen refresh
rate. Running OpenGL games or looking at the framerate indicator in KWin
are much more accurate measures of real-world performance.
[i945] (Needs UXA) Kubuntu Jaunty Intel 945 GM - Poor sluggish graphics performance in Kate text, etc.
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