Messages in this thread | | | Date | Thu, 10 Jan 2002 11:09:04 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [patch] O(1) scheduler, -D1, 2.5.2-pre9, 2.4.17 |
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On Thu, 10 Jan 2002, Davide Libenzi wrote: > > > > It wasn't a good night for benchmarking. I had a typo in the > > script to run chat reniced and as a result didn't collect any > > numbers for this. In addition, the kernel with Davide's patch > > failed to boot with 8 CPUs enabled. Can't see any '# CPU specific' > > mods in the patch. In any case, here is what I do have. > > Doh !! Do you have a panic dump Mike ?
I bet it's just the placement of "init_idle()" in init/main.c, which is unrelated to the scheduling proper, but if the kernel thread is started before the boot CPU has done its "init_idle()", then the scheduler state isn't really set up fully yet.
(Old bug, I think its been there for a long time, I just think that the old scheduler didn't much care, and the "child runs first" logic in particular of the new scheduler probably just showed it more clearly)
Linus
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