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From: Peter Zijlstra <peterz@infradead.org>
To: Glauber Costa <glommer@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	aliguori@us.ibm.com, Rik van Riel <riel@redhat.com>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>,
	Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH 16/16] KVM-GST: adjust scheduler cpu power
Date: Mon, 24 Jan 2011 20:53:10 +0100	[thread overview]
Message-ID: <1295898790.28776.474.camel@laptop> (raw)
In-Reply-To: <1295895083.15920.9.camel@mothafucka.localdomain>

On Mon, 2011-01-24 at 16:51 -0200, Glauber Costa wrote:
> 
> > I thought kvm had a ns resolution steal-time clock?
> Yes, the one I introduced earlier in this series is nsec. However, user
> and system will be accounted in usec at most, so there is no point in
> using nsec here.

Well, the scheduler accounts most things in ns these days -- some archs
even do user/sys time in ns -- using ticks is really very crude, esp
when you've got better information.

      parent reply	other threads:[~2011-01-24 19:52 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-24 18:06 [PATCH 00/16] New Proposal for steal time in KVM Glauber Costa
2011-01-24 18:06 ` [PATCH 01/16] KVM-HDR: register KVM basic header infrastructure Glauber Costa
2011-01-26 11:06   ` Avi Kivity
2011-01-26 12:13     ` Glauber Costa
2011-01-26 15:12       ` Avi Kivity
2011-01-26 15:36         ` Glauber Costa
2011-01-26 17:22           ` Anthony Liguori
2011-01-26 17:49             ` Glauber Costa
2011-01-27 12:31               ` Avi Kivity
2011-01-24 18:06 ` [PATCH 02/16] KVM-HV: KVM - KVM Virtual Memory hypervisor implementation Glauber Costa
2011-01-24 18:06 ` [PATCH 03/16] KVM-HDR: KVM Userspace registering ioctl Glauber Costa
2011-01-26 11:12   ` Avi Kivity
2011-01-26 12:14     ` Glauber Costa
2011-01-26 15:14       ` Avi Kivity
2011-01-26 15:23         ` Glauber Costa
2011-01-24 18:06 ` [PATCH 04/16] KVM-HV: " Glauber Costa
2011-01-24 18:06 ` [PATCH 05/16] KVM-HDR: Implement wallclock over KVM - KVM Virtual Memory Glauber Costa
2011-01-26 11:13   ` Avi Kivity
2011-01-26 12:20     ` Glauber Costa
2011-01-26 15:17       ` Avi Kivity
2011-01-26 15:45         ` Glauber Costa
2011-01-27 12:17           ` Avi Kivity
2011-01-24 18:06 ` [PATCH 06/16] " Glauber Costa
2011-01-24 18:06 ` [PATCH 07/16] KVM-GST: " Glauber Costa
2011-01-24 18:06 ` [PATCH 08/16] KVM-HDR: Implement kvmclock systemtime " Glauber Costa
2011-01-24 18:06 ` [PATCH 09/16] KVM-HV: " Glauber Costa
2011-01-24 18:06 ` [PATCH 10/16] KVM-GST: " Glauber Costa
2011-01-24 18:06 ` [PATCH 11/16] KVM-HDR: KVM Steal time implementation Glauber Costa
2011-01-24 23:06   ` Rik van Riel
2011-01-24 18:06 ` [PATCH 12/16] KVM-HV: " Glauber Costa
2011-01-24 23:15   ` Rik van Riel
2011-01-24 18:06 ` [PATCH 13/16] KVM-HV: KVM Steal time calculation Glauber Costa
2011-01-24 23:20   ` Rik van Riel
2011-01-24 18:06 ` [PATCH 14/16] KVM-GST: KVM Steal time registration Glauber Costa
2011-01-24 23:27   ` Rik van Riel
2011-01-24 23:31   ` Rik van Riel
2011-01-25  1:25     ` Glauber Costa
2011-01-25  1:26       ` Rik van Riel
2011-01-25  1:28         ` Glauber Costa
2011-01-24 18:06 ` [PATCH 15/16] KVM-GST: KVM Steal time accounting Glauber Costa
2011-01-24 23:33   ` Rik van Riel
2011-01-24 18:06 ` [PATCH 16/16] KVM-GST: adjust scheduler cpu power Glauber Costa
2011-01-24 18:32   ` Peter Zijlstra
2011-01-24 18:51     ` Glauber Costa
2011-01-24 19:51       ` Peter Zijlstra
2011-01-24 19:57         ` Glauber Costa
2011-01-25 20:02         ` Glauber Costa
2011-01-25 20:13           ` Peter Zijlstra
2011-01-25 20:47             ` Glauber Costa
2011-01-25 21:07               ` Peter Zijlstra
2011-01-25 21:27                 ` Glauber Costa
2011-01-26  9:57                   ` Peter Zijlstra
2011-01-26 15:43                     ` Glauber Costa
2011-01-26 16:46                       ` Peter Zijlstra
2011-01-26 16:53                         ` Peter Zijlstra
2011-01-26 18:11                         ` Glauber Costa
2011-01-24 19:53       ` Peter Zijlstra [this message]

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