From: Markus Trippelsdorf <markus@trippelsdorf.de>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Lutomirski <luto@mit.edu>,
linux-kernel@vger.kernel.org, Andi Kleen <andi@firstfloor.org>,
x86 <x86@kernel.org>
Subject: Re: [RFT] Please test rdtsc on various x86-64 hardware (app included)
Date: Tue, 19 Apr 2011 02:38:39 +0200 [thread overview]
Message-ID: <20110419003839.GA1624@x4.trippels.de> (raw)
In-Reply-To: <20110418203726.GA30868@elte.hu>
On 2011.04.18 at 22:37 +0200, Ingo Molnar wrote:
>
> * Linus Torvalds <torvalds@linux-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
next prev parent reply other threads:[~2011-04-19 0:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-18 19:32 Andrew Lutomirski
2011-04-18 20:16 ` Linus Torvalds
2011-04-18 20:37 ` Ingo Molnar
2011-04-19 0:38 ` Markus Trippelsdorf [this message]
2011-04-18 20:23 ` Colin Walters
2011-04-18 20:27 ` Andrew Lutomirski
2011-04-18 20:35 ` Colin Walters
2011-04-18 20:39 ` Andrew Lutomirski
2011-04-18 22:10 ` Andi Kleen
2011-04-19 2:15 ` Andrew Lutomirski
2011-04-19 0:49 ` Mihai Donțu
2011-04-19 8:10 ` Frank Kingswood
2011-04-22 14:33 ` Jan Ceuleers
2011-04-19 5:06 George Spelvin
2011-04-19 6:09 ` George Spelvin
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