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Re: [Qemu-devel] Best way to get real performance info?
From: |
andrzej zaborowski |
Subject: |
Re: [Qemu-devel] Best way to get real performance info? |
Date: |
Wed, 6 Sep 2006 15:37:30 +0200 |
On 06/09/06, Alessandro Corradi <address@hidden> wrote:
Hi all,
I need to measure the performance of a host OS, a guest OS with and without
kqemu.
I particular I need to have performance info about CPU. I made a simple C
program that makes only arithmetical operations and long cycles.
I run "time ./myapp" but the results are not the real ones. Can someone tell
me how to get this measures?
Hi,
I don't know about real benchmarking but one improvement I can think
of is measure the times on host, with something like the following:
address@hidden $ nc -l 10000; time nc -l 10000
and
address@hidden $ nc host_ip_here 10000 <<< started; ./myapp; nc
host_ip_here 10000 <<< finished
(nc is netcat)
It's still very inaccurate but the error is small if ./myapp takes
long. Perhaps someone will have better ideas.
Thanks
Ale
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