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Re: [Qemu-devel] qemu (cvs-version) performance?

From: Paul Brook
Subject: Re: [Qemu-devel] qemu (cvs-version) performance?
Date: Sat, 11 Mar 2006 22:25:15 +0000
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> I thought, that qemu-0.8.0's problem would be disk-IO. I installed
> Windows 2000 and in the task-manager the CPU-Time is 100% during intense
> IO. A "dir c:\ /A /S /B >NUL:" on the console causes 100% CPU-time and
> most of it being that red-colored "in-kernel-time".

Qemu host IO is syncrhonous. ie. the guest is paused on the instruction that 
issues the IO until the IO completes. As for as the guest is concerned it 
happens instantly. This is all your test shows.


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