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

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Message-ID: <alpine.DEB.2.10.1401161226170.30036@nuc>
Date:	Thu, 16 Jan 2014 12:26:52 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Dave Hansen <dave@...1.net>
cc:	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Pekka Enberg <penberg@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"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 Thu, 16 Jan 2014, Dave Hansen wrote:

> This was a really tight loop where the caches are really hot, but it did
> show the large 'struct page' winning:
>
> 	http://sr71.net/~dave/intel/slub/slub-perf-20140109.png
>
> As I said in the earlier description, the paravirt code doing interrupt
> disabling was what really hurt the two spinlock cases.

Hrm... Ok. in that case the additional complexity may be justified.

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