linux-kernel - Re: [GIT PULL] Lockless SLUB slowpaths for v3.1-rc1

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Message-ID: <CAOJsxLHB9jPNyU2qztbEHG4AZWjauCLkwUVYr--8PuBBg1=MCA@mail.gmail.com>
Date:	Mon, 1 Aug 2011 15:06:19 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Christoph Lameter <cl@...ux.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>, hughd@...gle.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [GIT PULL] Lockless SLUB slowpaths for v3.1-rc1

On Mon, Aug 1, 2011 at 12:55 AM, David Rientjes <rientjes@...gle.com> wrote:
> I'm very confident that slub could beat slab on any system if you throw
> enough memory at it because its fastpaths are extremely efficient, but
> there's no business case for that.

Btw, I haven't measured this recently but in my testing, SLAB has
pretty much always used more memory than SLUB. So 'throwing more
memory at the problem' is definitely a reasonable approach for SLUB.

                        Pekka
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