Messages in this thread | | | From | Valentin Schneider <> | Subject | Re: [sched/fair] 38ac256d1c: stress-ng.vm-segv.ops_per_sec -13.8% regression | Date | Thu, 22 Apr 2021 10:55:10 +0100 |
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On 22/04/21 15:47, Oliver Sang wrote: > hi, Valentin Schneider, > > On Wed, Apr 21, 2021 at 11:27:49AM +0100, Valentin Schneider wrote: >> On 21/04/21 11:20, Oliver Sang wrote: >> > what's the machine model you used upon which the regression cannot be reproduced? >> > we could check if we have similar model then re-check on the our machine. >> > >> >> I tested this on: >> o Ampere eMAG (arm64, 32 cores) >> o 2-socket Xeon E5-2690 (x86, 40 cores) >> >> and found at worse a -0.3% regression and at best a 2% improvement. I know >> that x86 box is somewhat ancient, but it's been my go-to "have I broken >> x86?" test victim for a while :-) > > we don't have exactly 2-socket Xeon E5-2690 model, but we have one: > Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz (2-socket, 48 cores with 112G memory) > the test on it shows the regression is existing, too. but smaller (-5.3%) > hope it's helpful >
It is, thank you for trying this out on another system and figuring out it's still visible! I'll go find myself some other x86 box and dig into it; I'd rather not leave this hanging for too long.
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