From: Rik van Riel <riel@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Thomas Treutner <thomas@scripty.at>,
KVM mailing list <kvm@vger.kernel.org>
Subject: Re: report stolen time via pvclock?
Date: Tue, 09 Mar 2010 16:39:48 -0500 [thread overview]
Message-ID: <4B96C024.5080605@redhat.com> (raw)
In-Reply-To: <20100309213009.GA26204@amt.cnet>
On 03/09/2010 04:30 PM, Marcelo Tosatti wrote:
> On Tue, Mar 09, 2010 at 09:47:38PM +0100, Thomas Treutner wrote:
>> Hi,
>>
>> I'm referring to this patchset
>>
>> http://www.mail-archive.com/kvm@vger.kernel.org/msg23810.html
>>
>> of Marcelo Tosatti. It seems it was never included or even discussed, although
>> it's nearly half a year old. I wonder if there is a good reason for that? I'd
>> like to use the steal time for my VMs, as I consider it useful in some cases.
>
> There is a problem with it: stolen time is accounted separately (in
> addition to) user/system/idle.
>
> And as you noted there seems to be lack of interest in the feature.
More like a lack of time to implement it properly for KVM.
I know it is a useful feature for system administrators, and
should probably try to get it reimplemented so it works right
and with lower overhead than full schedstats (I have some
ideas on how to achieve that).
Thanks for reminding me of this project :)
prev parent reply other threads:[~2010-03-09 21:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-09 20:47 report stolen time via pvclock? Thomas Treutner
2010-03-09 21:30 ` Marcelo Tosatti
2010-03-09 21:39 ` Rik van Riel [this message]
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