On Mon, Nov 10, 2003 at 09:58:29PM +0200, Dan Fruehauf wrote: > Evening, > Recently i discovered that my machine (a dual p3 450MHz with > 256mb of ram) is > very slow. top says that somewhat like 30% of cpu cycles are being used by > the system level.
That's a lot. What kind of activity is it doing at the moment? > i suspect that it might be the SMP support which is > compiled into the kernel, mainly because when compiled with no SMP it runs > just about fine, Uhm, when compiled with no smp, it runs with just one CPU. > I'm using kernel version 2.4.22 (stable, as for today). If anyone here has > any idea of anything i could try (hey, i'm not the first one to use SMP in > linux! ) i'd love to hear about it. You could give 2.6 a shot and report how it feels for you if you're up to it. Alternatively, a description of what exactly you're doing that causes the SMP kernel to behave worse than the UP kernel (is that really what happens?) and the output of 'vmstat 1' would be useful. > If no one has anything to say, i'll probably profile the kernel, and submit a > bug report.. (in the latest changlogs i couldnt find anything related to that > problem). That will even better. I recommend oprofile, http://oprofile.sf.net Cheers, Muli -- Muli Ben-Yehuda http://www.mulix.org | http://mulix.livejournal.com/ "the nucleus of linux oscillates my world" - [EMAIL PROTECTED]
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