Re: blktrace vs ftrace

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On Thu, Feb 2, 2012 at 17:20, Matthias Brugger
<matthias.bgg@xxxxxxxxxxxxxx> wrote:
> Hi all,
>
> I'm trying to analize I/O behavior of Qemu on the host.

what is your complete command to invoke Qemu?

sometimes Qemu's I/O behaviour can be modified by certain parameter.
All I know recent Qemu release (>= 1.x) use iothread by default, which
might explain your 4 threads reads.
-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com

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