Messages in this thread | | | Date | Fri, 12 Mar 2004 10:29:27 +1100 | From | Nick Piggin <> | Subject | Re: 2.6.4-mm1 |
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Anton Blanchard wrote:
> > >>- The CPU scheduler changes in -mm (sched-domains) have been hanging about >> for too long. I had been hoping that the people who care about SMT and >> NUMA performance would have some results by now but all seems to be silent. >> >> I do not wish to merge these up until the big-iron guys can say that they >> suit their requirements, with a reasonable expectation that we will not >> need to churn this code later in the 2.6 series. >> >> So. If you have been testing, please speak up. If you have not been >> testing, please do so. >> > >I sucked sched-* out of mm, added sched-ppc64bits (attached) and am >having problems with the following threaded test case. NUMA is enabled. > >#include <pthread.h> >#define NR_THREADS 100 > >void dostuff(void *junk) >{ > while(1) > ; >} > >int main() >{ > int i; > pthread_t tid; > > for (i = 0; i < NR_THREADS-1; i++) > pthread_create(&tid, NULL, dostuff, NULL); > > dostuff(NULL); >} > >100 runnable threads but we never use more than one cpu: >
OK thanks. This is probably a simple bug somewhere. I'll have a look at it soon.
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