linux-kernel - Re: [RFC] CPU hard limits

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Message-ID: <4A292F9E.6020602@nortel.com>
Date:	Fri, 05 Jun 2009 08:45:50 -0600
From:	"Chris Friesen" <cfriesen@...tel.com>
To:	Dhaval Giani <dhaval@...ux.vnet.ibm.com>
CC:	Avi Kivity <avi@...hat.com>, Paul Menage <menage@...gle.com>,
	bharata@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Gautham R Shenoy <ego@...ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Pavel Emelyanov <xemul@...nvz.org>, kvm@...r.kernel.org,
	Linux Containers <containers@...ts.linux-foundation.org>,
	Herbert Poetzl <herbert@...hfloor.at>
Subject: Re: [RFC] CPU hard limits

Dhaval Giani wrote:

> Shares cannot be used to provide guarantees. All they decide is what
> propotion groups can get CPU time. (yes, shares is a bad name, weight
> shows the intent better).

If I (as the administrator of the system) arbitrarily decide that all
the shares/weights must add up to 100, they magically become percentage
guarantees.

Chris
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