Messages in this thread | | | Date | Mon, 22 Jul 2013 12:06:06 +0200 | From | Ingo Molnar <> | Subject | Re: [RESEND][PATCH] mm: vmstats: tlb flush counters |
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* Dave Hansen <dave@sr71.net> wrote:
> On 07/19/2013 04:38 AM, Raghavendra KT wrote: > > While measuring non - PLE performance, one of the bottleneck, I am seeing is > > flush tlbs. > > perf had helped in alaysing a bit there, but this patch would help > > in precise calculation. It will aslo help in tuning the PLE window > > experiments (larger PLE window > > would affect remote flush TLBs) > > Interesting. What workload is that? I've been having problems finding > workloads that are too consumed with TLB flushes.
Btw., would be nice to also integrate these VM counters into perf as well, as an instrumentation variant/option.
It could be done in an almost zero overhead fashion using jump-labels I think.
[ Just in case someone is bored to death and is looking for an interesting side project ;-) ]
Thanks,
Ingo
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