From: Marcelo Tosatti <mtosatti@redhat.com>
To: Joerg Roedel <joerg.roedel@amd.com>
Cc: Avi Kivity <avi@redhat.com>,
kvm@vger.kernel.org, Alexander Graf <agraf@suse.de>
Subject: Re: [PATCH 0/2] unit-tests: Add tests to measure svm instruction latencys
Date: Mon, 20 Sep 2010 15:05:00 -0300 [thread overview]
Message-ID: <20100920180500.GA27404@amt.cnet> (raw)
In-Reply-To: <1284904611-2458-1-git-send-email-joerg.roedel@amd.com>
On Sun, Sep 19, 2010 at 03:56:49PM +0200, Joerg Roedel wrote:
> Hi,
>
> here are two patches for the svm unit-test framework that measure the
> latency of the emulated vmrun, vmload, and vmsave instructions as well
> as the latency of emulated vmexits.
>
> On my Phenom II X6 1090T running in P0 it produces output like this:
>
> Latency VMRUN : max: 140956 min: 6770 avg: 6819
> Latency VMEXIT: max: 141042 min: 7475 avg: 7575
> latency_run_exit: PASS
> Latency VMLOAD: max: 23248 min: 1915 avg: 1925
> Latency VMSAVE: max: 130888 min: 1917 avg: 1955
> latency_load_save: PASS
>
> These two tests report the tsc-cycles between events. Each latency is
> measured one million times (which explains the large -max values).
>
> Joerg
Applied, thanks.
prev parent reply other threads:[~2010-09-20 19:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-19 13:56 [PATCH 0/2] unit-tests: Add tests to measure svm instruction latencys Joerg Roedel
2010-09-19 13:56 ` [PATCH 1/2] svm: Add VMRUN/VMEXIT latency test Joerg Roedel
2010-09-19 13:56 ` [PATCH 2/2] svm: Add VMLOAD/VMSAVE " Joerg Roedel
2010-09-19 15:07 ` Roedel, Joerg
2010-09-20 18:05 ` Marcelo Tosatti [this message]
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