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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This archive was generated by hypermail 2b29 : Tue Jul 30 2002 - 14:00:30 EST