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Re: [Qemu-devel] Boot Problems Windows XP guest


From: Paolo Bonzini
Subject: Re: [Qemu-devel] Boot Problems Windows XP guest
Date: Wed, 28 Aug 2013 16:05:42 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130805 Thunderbird/17.0.8

Il 28/08/2013 16:05, Benoît 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=avg/10 due to the 100ms slice time).  This is Windows so no CFQ
>> > here.  Do you need to set bps_max=1 or will bps_max=0 work too?
> In it's current state the code will overwrite the burst if it's set smaller 
> than
> avg/10.
> The result will be a small initial spike of size avg/10 then it will cap 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



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