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

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Date:	Fri, 15 Sep 2006 12:57:42 +0400
From:	Kirill Korotaev <dev@...ru>
To:	sekharan@...ibm.com
CC:	Pavel Emelianov <xemul@...nvz.org>, balbir@...ibm.com,
	Dave Hansen <haveblue@...ibm.com>,
	Rik van Riel <riel@...hat.com>, Srivatsa <vatsa@...ibm.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	CKRM-Tech <ckrm-tech@...ts.sourceforge.net>,
	Andi Kleen <ak@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrey Savochkin <saw@...ru>,
	Matt Helsley <matthltc@...ibm.com>,
	Hugh Dickins <hugh@...itas.com>,
	Alexey Dobriyan <adobriyan@...l.ru>,
	Oleg Nesterov <oleg@...sign.ru>, devel@...nvz.org
Subject: Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added	user
 memory)

> CKRM/RG handles it this way:
> 
> Amount of a resource a child RG gets is the ratio of its share value to
> the parent's total # of shares. Children's resource allocation can be
> changed just by changing the parent's total # of shares.
> 
> If you case about initial situation would be:
>   Total memory in the system 100MB 
>   parent's total # of shares: 100 (1 share == 1MB)
>   10 children with # of shares: 10 (i.e each children has 10MB)
> 
> When I want to add another child, just change parent's total # of shares
> to be say 125:
>   Total memory in the system 100MB
>   parent's total # of shares: 125 (1 share == 0.8MB)
>   10 children with # of shares: 10 (i.e each children has 8MB)
> Now you are left with 25 shares (or 20MB) that you can assign to new
> child(ren) as you please.

setting memory in "shares" doesn't look user friendly at all...

Kirill

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