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

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Message-ID: <47D6443D.9000904@openvz.org>
Date:	Tue, 11 Mar 2008 11:35:09 +0300
From:	Pavel Emelyanov <xemul@...nvz.org>
To:	balbir@...ux.vnet.ibm.com
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)

Balbir Singh wrote:
> 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,

Well, the objects-per-page without the patch is objects-per-page for
according kmalloc cache :)

> I'll check it once I get it back.
> 

Ok, thanks!
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