Messages in this thread | | | Date | Tue, 19 Jan 2021 16:33:50 +0100 | From | Borislav Petkov <> | Subject | Re: [x86/mce] 7bb39313cd: netperf.Throughput_tps -4.5% regression |
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On Tue, Jan 19, 2021 at 11:09:03PM +0800, Feng Tang wrote: > Yes, that can happen. I started a 4 tasks netperf on a 4C/8T KBL desktop, > and also saw around 2% improvement. Both the kernel config and the > platform matters.
Oh great. ;-\
> For the performance changes I have checked, sometimes the change can be > reproduced on platforms of different generations (the exact delta number > may differs), sometimes it can only be reproduced on one specific platform, > like some old generation, or special one like Xeon Phi.
Probably because that Xeon Phi thing is not as powerful cache-wise as some newer ones which have bigger caches and smarter hw prefetchers, etc.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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