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Re: [Qemu-devel] performance monitor

From: Clemens Kolbitsch
Subject: Re: [Qemu-devel] performance monitor
Date: Thu, 3 Jan 2008 23:21:21 +0100
User-agent: KMail/1.9.6

On Thursday 03 January 2008 23:18:58 Paul Brook wrote:
> > Well, the measuring I had in mind partly concentrats on TLB misses, page
> > faults, etc. (in addition to the cycle measuring). guess i'll have to
> > implement something for myself in qemu :-/
> Be aware that the TLB qemu uses behaves very differently to a real CPU TLB.
> If you want to get TLB miss statistics you'll need to model a "real" TLB
> for that separately.

Sure, yes. But I don't even care what it would be like on a real CPU. I just 
want to know the impact it has on the emulated CPU ;-)

> Page faults should be straightforward, but any half-decent guest OS would
> be able to tell you those anyway.

True *g*

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