linux-kernel - Re: [PATCH 0/9] re-shrink 'struct page' when SLUB is on.

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Message-ID: <CAOJsxLE-oMpV2G-gxrhyv0Au1tPd87Ow57VD5CWFo41wF8F4Yw@mail.gmail.com>
Date:	Sat, 11 Jan 2014 11:26:16 +0200
From:	Pekka Enberg <penberg@...nel.org>
To:	Dave Hansen <dave@...1.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Christoph Lameter <cl@...ux-foundation.org>
Subject: Re: [PATCH 0/9] re-shrink 'struct page' when SLUB is on.

On Sat, Jan 11, 2014 at 1:42 AM, Dave Hansen <dave@...1.net> wrote:
> On 01/10/2014 03:39 PM, Andrew Morton wrote:
>>> I tested 4 cases, all of these on the "cache-cold kfree()" case.  The
>>> first 3 are with vanilla upstream kernel source.  The 4th is patched
>>> with my new slub code (all single-threaded):
>>>
>>>      http://www.sr71.net/~dave/intel/slub/slub-perf-20140109.png
>>
>> So we're converging on the most complex option.  argh.
>
> Yeah, looks that way.

Seems like a reasonable compromise between memory usage and allocation speed.

Christoph?

                        Pekka
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