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Re: [Qemu-devel] [PATCH v6 1/5] cpu: Provide vcpu throttling interface


From: Andreas Färber
Subject: Re: [Qemu-devel] [PATCH v6 1/5] cpu: Provide vcpu throttling interface
Date: Mon, 7 Sep 2015 16:08:42 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0

Am 07.09.2015 um 14:53 schrieb Paolo Bonzini:
> On 04/09/2015 18:26, Jason J. Herne wrote:
>> +    pct = (double)cpu_throttle_get_percentage()/100;
>> +    throttle_ratio = pct / (1 - pct);
>> +    sleeptime_ms = (long)(throttle_ratio * CPU_THROTTLE_TIMESLICE);
> 
> This is going to be pretty imprecise, since there are only 11 possible
> values of sleeptime_ms.  Can you switch the timer and
> CPU_THROTTLE_TIMESLICE to nanosecond precision instead?
> 
> It's okay to provide this as a patch 6/5, and the maintainer will squash
> it into this patch.  Alternatively this can be sent as v7, as you prefer.

I'm assuming "the maintainer" refers to Juan for this series. ;)

I've been waiting for you guys to reach consensus - only nit I have is
that two colons are missing after "Returns" in the documentation.

Regards,
Andreas

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