--Con Kolivas <[email protected]> wrote (on Saturday, June 11, 2005 15:22:30 +1000):
> On Sat, 11 Jun 2005 14:14, Martin J. Bligh wrote:
>> --"Martin J. Bligh" <[email protected]> wrote (on Friday, June 10, 2005 > >
> OK, I backed out those 4, and the degredation mostly went away.
>> > See
>> > http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/perf/kernbench.
>> > moe.png
>> >
>> > and more specifically, see the +p5150 near the right hand side.
>> > I don't think it's quite as good as mainline, but much closer.
>> > I did this run with HZ=1000, and the the one with no scheduler
>> > patches at all with HZ=250, so I'll try to do a run that's more
>> > directly comparable as well
>>
>> OK, that makes it look much more like mainline. Looks like you were still
>> revising the details of your patch Con ... once you're ready, drop me a
>> URL for it, and I'll make the system whack on that too.
>
> Great thanks. Here are rolled up all the reconsidered changes that apply
> directly to 2.6.12-rc6-mm1 -purely for testing purposes-. I'd be very
> grateful to see how this performed; it has been boot and stress tested at
> this end. If it shows detriment I'll have to make the smp nice changes more
> complex.
It's much better ... but still a degredation - see point p5181 on:
http://ftp.kernel.org/pub/linux/kernel/people/mbligh/abat/perf/kernbench.moe.png
Only really seems to hurt the NUMA box (the x440 one ... elm3b67 ... is
still trying to find it's ass with both hands). I'm not necessarily saying
it's a problem ... not sure what the benefits of the patch are, but it's a
data point, at least ?
M.
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