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Date: Wed, 28 Aug 2013 16:05:42 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] Boot Problems Windows XP guest
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To: =?ISO-8859-1?Q?Beno=EEt_Canet?= <benoit.canet@irqsave.net>
Cc: Erik Rull <erik.rull@rdsoftware.de>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Stefan Hajnoczi <stefanha@gmail.com>

Il 28/08/2013 16:05, Beno=EEt Canet ha scritto:
>> Yes, I'm afraid that the burst is problematic here since the current
>> > throttling algorithm doesn't help (and IIUC it behaves as if it had
>> > max=3Davg/10 due to the 100ms slice time).  This is Windows so no CF=
Q
>> > here.  Do you need to set bps_max=3D1 or will bps_max=3D0 work too?
> In it's current state the code will overwrite the burst if it's set sma=
ller than
> avg/10.
> The result will be a small initial spike of size avg/10 then it will ca=
p to avg.

Can you whip up a patch to avoid that?  Or to honor bps_max if it is
specified (making avg/10 simply the default)?

Paolo