linux-kernel - Re: [RFC v2 PATCH 0/8] CFS Hard limits

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Message-ID: <4562.1255445366@turing-police.cc.vt.edu>
Date:	Tue, 13 Oct 2009 10:49:26 -0400
From:	Valdis.Kletnieks@...edu
To:	Pavel Emelyanov <xemul@...nvz.org>
Cc:	vatsa@...ibm.com, Bharata B Rao <bharata@...ux.vnet.ibm.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Gautham R Shenoy <ego@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Herbert Poetzl <herbert@...hfloor.at>,
	Avi Kivity <avi@...hat.com>,
	Chris Friesen <cfriesen@...tel.com>,
	Paul Menage <menage@...gle.com>,
	Mike Waychison <mikew@...gle.com>
Subject: Re: [RFC v2 PATCH 0/8] CFS Hard limits - v2

On Tue, 13 Oct 2009 15:39:17 +0400, Pavel Emelyanov said:

> 3) virtual cpu power in M/GHz - I don't agree with Balbir that
>    this is difficult for administrator. This is better than two
>    numbers and better that the percentage, since the amount of
>    cpu time got by a container will not change after migrating to
>    a more powerful CPU.

2Gz worth of throughput on an old Xeon is probably not the same as
half of a 4Gz i7.

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