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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] performance monitor
Date: Thu, 3 Jan 2008 21:29:06 +0000
References: <200801032136.27558.clemens.kol@gmx.at>
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To: qemu-devel@nongnu.org
Cc: Clemens Kolbitsch <clemens.kol@gmx.at>

> ... Ok, to cut a long question short: Is there any hardware support im qemu
> for doing monitoring (that goes deeper than using "time") and has anyone
> ever tested something that could work?

Probably your application wants the performance counters. Qemu doesn't emulate 
those.

Besides which, qemu is not cycle accurate. Any performance measurements your 
make are pretty much meaningless, and bear absolutely no relationship to real 
hardware.

Paul