linux-kernel - Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory)

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Message-ID: <20060912104410.GA28444@in.ibm.com>
Date:	Tue, 12 Sep 2006 16:14:10 +0530
From:	Srivatsa Vaddagiri <vatsa@...ibm.com>
To:	Rohit Seth <rohitseth@...gle.com>
Cc:	sekharan@...ibm.com, Rik van Riel <riel@...hat.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	CKRM-Tech <ckrm-tech@...ts.sourceforge.net>, balbir@...ibm.com,
	Dave Hansen <haveblue@...ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...e.de>, Christoph Hellwig <hch@...radead.org>,
	Andrey Savochkin <saw@...ru>,
	Matt Helsley <matthltc@...ibm.com>,
	Hugh Dickins <hugh@...itas.com>,
	Alexey Dobriyan <adobriyan@...l.ru>,
	Kirill Korotaev <dev@...ru>, Oleg Nesterov <oleg@...sign.ru>,
	devel@...nvz.org, Pavel Emelianov <xemul@...nvz.org>
Subject: Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user	memory)

On Mon, Sep 11, 2006 at 12:10:31PM -0700, Rohit Seth wrote:
> It seems that a single notion of limit should suffice, and that limit
> should more be treated as something beyond which that resource
> consumption in the container will be throttled/not_allowed.

The big question is : are containers/RG allowed to use *upto* their
limit always? In other words, will you typically setup limits such that
sum of all limits = max resource capacity? 

If it is setup like that, then what you are considering as limit is
actually guar no?

If it wont be setup like that, then I dont see how one can provide QoS.

-- 
Regards,
vatsa
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