Messages in this thread |  | | Date | Thu, 31 May 2018 11:26:19 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 1/3] sched: remove select_idle_core() for scalability |
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On Wed, May 30, 2018 at 03:08:21PM -0700, Subhra Mazumdar wrote: > I tested with FOLD+AGE+ONCE+PONIES+PONIES2 shift=0 vs baseline but see some > regression for hackbench and uperf:
I'm not seeing a hackbench regression myself, but I let it run a whole lot of stuff over-night and I do indeed see some pain points, including sysbench-mysql and some schbench results.
> I have a patch which is much smaller but seems to work well so far for both > x86 and SPARC across benchmarks I have run so far. It keeps the idle cpu > search between 1 core and 2 core amount of cpus and also puts a new > sched feature of doing idle core search or not. It can be on by default but > for workloads (like Oracle DB on x86) we can turn it off. I plan to send > that after some more testing.
Sure thing..
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