Messages in this thread |  | | | Date | Sun, 28 Jul 2002 14:36:49 -0700 | | From | Andrew Morton <> | | Subject | Re: inlines in kernel/sched.c |
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Ingo Molnar wrote: > > On Sun, 28 Jul 2002, Andrew Morton wrote: > > > Ingo, could you please review the use of inlines in the > > scheduler sometime? They seem to be excessive. > > > > For example, this patch reduces the sched.d icache footprint > > by 1.5 kilobytes. > > the patch also hurts context-switch latencies - it went > from 1.35 usecs to 1.42 usecs - a 5% drop. >
It will hurt with benchmarks, because with benchmarks all of the scheuler is in L1 all the time.
This stuff's hard. I don't know what the right answer is, really.
To optimise for scheduler-intensive workloads we should optimise for the all-in-cache case. To optimise for other workloads we should aim to reduce the cache footprint.
Perhaps. Dunno.
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