Messages in this thread | | | Subject | Re: [LKP] [sched/numa] a43455a1d57: +94.1% proc-vmstat.numa_hint_faults_local | From | Davidlohr Bueso <> | Date | Fri, 01 Aug 2014 13:46:40 -0700 |
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On Thu, 2014-07-31 at 18:16 +0200, Jirka Hladky wrote: > Peter, I'm seeing regressions for > > SINGLE SPECjbb instance for number of warehouses being the same as total > number of cores in the box. > > Example: 4 NUMA node box, each CPU has 6 cores => biggest regression is > for 24 warehouses.
By looking at your graph, that's around a 10% difference.
So I'm not seeing anywhere near as bad a regression on a 80-core box. Testing single with 80 warehouses, I get:
tip/master baseline: 677476.36 bops 705826.70 bops 704870.87 bops 681741.20 bops 707014.59 bops
Avg: 695385.94 bops
tip/master + patch (NUMA_SCALE/8 variant): 698242.66 bops 693873.18 bops 707852.28 bops 691785.96 bops 747206.03 bopsthis
Avg: 707792.022 bops
So both these are pretty similar, however, when reverting, on avg we increase the amount of bops a mere ~4%:
tip/master + reverted: 778416.02 bops 702602.62 bops 712557.32 bops 713982.90 bops 783300.36 bops
Avg: 738171.84 bops
Are there perhaps any special specjbb options you are using?
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