[Bug 12641] kernel 2.6.12 performance problem

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Tue Aug 23 08:00:05 UTC 2005

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------- Additional Comments From p92 at free.fr  2005-08-23 09:00 UTC -------
breezy kernel Linux version 2.6.12-7-686 (buildd at terranova) (gcc version 3.4.5 20050809 (prerelease) (Debian 3.4.4-6ubuntu4)) #1 Fri Aug 19 13:08:28 UTC 2005 
After several weeks of running the different new kernels I still have this problem. All I can say about it is the following: 
- after boot everything is fine now (before, kdm was horribly slow to start, now it starts in 4 sec instead of 2 minutes) 
- residual CPU when not doing anything is around 1 to 2 % 
- after some time of use OR if I use 100% CPU during a couple minutes, residual CPU reaches near 30% all the time. in fact, top shows each running process taking 
around 10% CPU. After that the machine begins to be unusable of course. 
- a reboot fix the problem 
I thought of a cpu temperature problem (cpu is between 56-61 °c), but since a reboot fixes the perf problem i really dont see the relation. At same temperature, 
windows works well. 

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