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

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Message-ID: <alpine.DEB.2.10.1401111854580.6036@nuc>
Date:	Sat, 11 Jan 2014 18:55:39 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Pekka Enberg <penberg@...nel.org>
cc:	Dave Hansen <dave@...1.net>,
	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>
Subject: Re: [PATCH 0/9] re-shrink 'struct page' when SLUB is on.

On Sat, 11 Jan 2014, Pekka Enberg wrote:

> 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?

Fundamentally I think this is good. I need to look at the details but I am
only going to be able to do that next week when I am back in the office.

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