Messages in this thread | | | Date | Sat, 28 Feb 2004 22:23:00 +1100 | From | Nick Piggin <> | Subject | Re: sched domains kernbench improvements |
| |
Con Kolivas wrote:
>On Sat, 28 Feb 2004 22:15, Nick Piggin wrote: > >>Con Kolivas wrote: >> >>>Hi Nick >>> >>> >>>>So it is more a matter of tuning than anything fundamental >>>> >>>Geez I know how you feel... :-D >>> >>> >>>I tried it on the X440 with sched smt disabled >>> >>>better than before but still slower than vanilla on half load; however >>>better than vanilla on optimal and full load now! I wonder whether the >>>worse result on half load is as relevant since this is 8x HT cpus? >>> >>Thanks. Yep the drop off at half load is to be expected with >>CONFIG_SCHED_SMT turned off. >> > >Will this affect the SCHED_SMT performance and should I do a round of benchies >with this enabled? > >
It will as far as balancing between physical CPUs, yes. It probably doesn't make quite a big difference because it is less of a problem if one sibling goes idle than if one CPU (in the 8-way) goes idle).
But if you could do a round with SCHED_SMT enabled it would be very nice of you ;)
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |