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

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Message-Id: <1158109991.4800.43.camel@linuxchandra>
Date:	Tue, 12 Sep 2006 18:13:10 -0700
From:	Chandra Seetharaman <sekharan@...ibm.com>
To:	rohitseth@...gle.com
Cc:	Rik van Riel <riel@...hat.com>, vatsa@...ibm.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 Tue, 2006-09-12 at 17:43 -0700, Rohit Seth wrote:
<snip>

> > It won't be a complete solution, as the user won't be able to
> >  - set both guarantee and limit for a resource group
> >  - use limit on some and guarantee on some
> >  - optimize the usage of available resources 
> 
> I think, if we have some of the dynamic resource limit adjustments
> possible then some of the above functionality could be achieved. And I
> think that could be a good start point.


Yes, dynamic resource adjustments should be available. But, you can't
expect the sysadmin to sit around and keep tweaking the limits so as to
achieve the QoS he wants. (Even if you have an application sitting and
doing it, as I pointed in other email it may not be possible for
different scenarios).
> 
> -rohit
> 
> 
> -------------------------------------------------------------------------
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-- 

----------------------------------------------------------------------
    Chandra Seetharaman               | Be careful what you choose....
              - sekharan@...ibm.com   |      .......you may get it.
----------------------------------------------------------------------


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