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Date: Tue, 19 Apr 2011 02:38:39 +0200 From: Markus Trippelsdorf <markus@...ppelsdorf.de> To: Ingo Molnar <mingo@...e.hu> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Lutomirski <luto@....edu>, linux-kernel@...r.kernel.org, Andi Kleen <andi@...stfloor.org>, x86 <x86@...nel.org> Subject: Re: [RFT] Please test rdtsc on various x86-64 hardware (app included) On 2011.04.18 at 22:37 +0200, Ingo Molnar wrote: > > * Linus Torvalds <torvalds@...ux-foundation.org> wrote: > > > Some opteron love would be good, but I don't have access to any right here. > > Here's one: And another: CPU vendor : AuthenticAMD CPU model : AMD Phenom(tm) II X4 955 Processor CPU stepping : 2 TSC flags : tsc rdtscp constant_tsc nonstop_tsc Using mfence_rdtsc because you don't have an Intel CPU Will test the "mfence;rdtsc" clock. Now test passed : margin 208 with 8769512 samples Load3 test passed: margin 339 with 4880373 samples Load test passed : margin 193 with 7189144 samples Store test passed: margin 192 with 7149930 samples -- Markus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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