From: Benjamin Prosnitz <b-prosnitz-angj7XTnwNpXfO9P/gJGhg@public.gmane.org>
To: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Floating point vs Integer performance
Date: Mon, 12 Mar 2007 15:18:44 -0500 [thread overview]
Message-ID: <1173730724.7220.5.camel@localhost> (raw)
I ran some benchmarks inside of KVM-12 on my system and outside of KVM
(no virtualization on my system). I found that floating point
performance when running both with and without KVM was approximately the
same, but integer performance in KVM was about 25% of what I get when
running the test outside of KVM. These were tests using Dhrystone 2 and
Double Precision Whetstone on a Core 2 Duo T7200 processor.
Any thoughts on why the integer and floating point performance appears
to differ so much?
Benjamin Prosnitz
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next reply other threads:[~2007-03-12 20:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-12 20:18 Benjamin Prosnitz [this message]
2007-03-13 8:03 ` Floating point vs Integer performance Avi Kivity
2007-03-13 8:16 ` Michael Riepe
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