Messages in this thread | | | Date | Tue, 28 Feb 2006 21:48:12 +0100 | From | "Jesper Juhl" <> | Subject | Re: Odd sched behaviour; It takes 5 threads or more to load 2 CPU cores during kernel build |
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On 2/28/06, Christian <christiand59@web.de> wrote: > Am Dienstag, 28. Februar 2006 20:59 schrieb Jesper Juhl: [snip] > > > > Do we have a scheduler problem? > > An io-scheduler problem? > > I'm not really into this, but what happens if you simply start 5 different > kernel-builds in parallel? I think if it makes a difference then this would > mean that there's something wrong with make and you could eliminate the first > two possibilities?! >
Well, no need for 5 kernel builds in that case. If I clone my source tree and then simply run $ make distclean ; make allnoconfig ; nice make in each directory in two different shells at the same time, then both cores get fully loaded.
> > Is it "make" that's being difficult? > > Is it something in the kernels Makefile that causes the build to > > behave this way? > > Could it be a bottleneck in my system somewhere? > > > > Anyone got a clue? > >
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