Messages in this thread | | | Date | Sat, 20 Jul 2013 18:39:55 +0530 | From | Raghavendra K T <> | Subject | Re: [RESEND][PATCH] mm: vmstats: tlb flush counters |
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On 07/19/2013 08:50 PM, Dave Hansen 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. >
Dave, ebizzy is the one. and dbench to some small extent.
[root@codeblue ~]# cat /proc/vmstat |grep nr_tlb ; /root/data/script/do_ebizzy.sh; cat /proc/vmstat |grep nr_tlb nr_tlb_remote_flush 721 nr_tlb_remote_flush_received 923 nr_tlb_local_flush_all 13992 nr_tlb_local_flush_one 0 nr_tlb_local_flush_one_kernel 0 7482 records/s real 120.00 s user 86.69 s sys 3746.57 s nr_tlb_remote_flush 912896 nr_tlb_remote_flush_received 28261974 nr_tlb_local_flush_all 926272 nr_tlb_local_flush_one 0 nr_tlb_local_flush_one_kernel 0
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