Messages in this thread | | | Date | Fri, 16 Sep 2016 14:01:19 +0100 | From | Matt Fleming <> | Subject | Re: [PATCH v2] perf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2 |
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On Thu, 25 Aug, at 05:35:14AM, Borislav Petkov wrote: > (dropping stable@ from CC) > > On Wed, Aug 24, 2016 at 08:27:06PM +0200, Peter Zijlstra wrote: > > They're not meant to be comparable between machines. I wouldn't even > > compare the LLC numbers between two different Intel parts. > > > > These events are meant to profile a workload on the machine you run them > > on. Big cache-miss/ref ratios indicate you loose performance because of > > the memory subsystem and or data structure layout. > > Ah ok, then I've misunderstood Matt's justification in the commit message. > > FWIW: Acked-by: Borislav Petkov <bp@suse.de>
Ping? Tip folks: are you OK to apply this?
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