linux-kernel - Re: [PATCH] Move memory controller allocations to their own slabs (v2)

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Message-ID: <47D63FB1.7040502@linux.vnet.ibm.com>
Date:	Tue, 11 Mar 2008 13:45:45 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Pavel Emelyanov <xemul@...nvz.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hugh@...itas.com>,
	Sudhir Kumar <skumar@...ux.vnet.ibm.com>,
	YAMAMOTO Takashi <yamamoto@...inux.co.jp>,
	Paul Menage <menage@...gle.com>, lizf@...fujitsu.com,
	linux-kernel@...r.kernel.org, taka@...inux.co.jp,
	linux-mm@...ck.org, David Rientjes <rientjes@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH] Move memory controller allocations to their own slabs
 (v2)

Pavel Emelyanov wrote:
> Balbir Singh wrote:
>> Move the memory controller data structure page_cgroup to its own slab cache.
>> It saves space on the system, allocations are not necessarily pushed to order
>> of 2 and should provide performance benefits. Users who disable the memory
>> controller can also double check that the memory controller is not allocating
>> page_cgroup's.
> 
> Can you, please, check how many objects-per-page we have with and 
> without this patch for SLAB and SLUB?
> 
> Thanks.

I can for objects-per-page with this patch for SLUB and SLAB. I am not sure
about what to check for without this patch. The machine is temporarily busy,
I'll check it once I get it back.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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