Messages in this thread | | | Date | Fri, 2 Apr 2004 02:23:48 -0800 | From | Andrew Morton <> | Subject | Re: Very poor performance with 2.6.4 |
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Andreas Hartmann <andihartmann@freenet.de> wrote: > > Now, I tested 2.6.5-rc3-mm4. Same procedure. > The good news first: > 2.6.5-rc3-mm4 is nearly as fast as 2.4.25 - it is about 2% slower than > 2.4.25 (with preemption turned on). > > Now the bad news: > The system-processor-time is unchanged abnormal high: it is 34% (!) higher > than in 2.4.25 (and about 1% more than in 2.4.6). > > > Btw: Did the other profile outputs help to find the problem? > > These are the profile-values for an example run (make of kernel 2.6.5rc2) > with 2.6.5rc3mm4:
Spending a lot of time on do_softirq() while compiling stuff is peculiar.
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