From: Andi Kleen <andi@firstfloor.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Mackall <mpm@selenic.com>,
Pekka J Enberg <penberg@cs.helsinki.fi>,
Christoph Lameter <clameter@sgi.com>, Ingo Molnar <mingo@elte.hu>,
Hugh Dickins <hugh@veritas.com>, Andi Kleen <andi@firstfloor.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH] greatly reduce SLOB external fragmentation
Date: Thu, 10 Jan 2008 20:53:29 +0100 [thread overview]
Message-ID: <20080110195329.GB2120@one.firstfloor.org> (raw)
In-Reply-To: <alpine.LFD.1.00.0801101124140.3148@woody.linux-foundation.org>
> - huge pages (superpages for those crazy db people)
>
> Just a simple linked list of these things is fine, we'd never care
> about coalescing large pages together anyway.
I did essentially that for my GBpages hugetlbfs patchkit. GB pages are already
beyond MAX_ORDER and increasing MAX_ORDER didn't seem attractive because
it would require aligning the zones all to 1GB which would quite nasty.
So it just grabbed them out of bootmem early and managed them in a
per node list.
Not sure it's a good idea for 2MB pages though.
-Andi
next prev parent reply other threads:[~2008-01-10 19:51 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-02 18:43 [PATCH] procfs: provide slub's /proc/slabinfo Hugh Dickins
2008-01-02 18:53 ` Christoph Lameter
2008-01-02 19:09 ` Pekka Enberg
2008-01-02 19:35 ` Linus Torvalds
2008-01-02 19:45 ` Linus Torvalds
2008-01-02 19:49 ` Pekka Enberg
2008-01-02 22:50 ` Matt Mackall
2008-01-03 8:52 ` Ingo Molnar
2008-01-03 16:46 ` Matt Mackall
2008-01-04 2:21 ` Christoph Lameter
2008-01-04 2:45 ` Andi Kleen
2008-01-04 4:34 ` Matt Mackall
2008-01-04 9:17 ` Peter Zijlstra
2008-01-04 20:37 ` Christoph Lameter
2008-01-04 4:11 ` Matt Mackall
2008-01-04 20:34 ` Christoph Lameter
2008-01-04 20:55 ` Matt Mackall
2008-01-04 21:36 ` Christoph Lameter
2008-01-04 22:30 ` Matt Mackall
2008-01-05 20:16 ` Christoph Lameter
2008-01-05 16:21 ` Pekka J Enberg
2008-01-05 17:14 ` Andi Kleen
2008-01-05 20:05 ` Christoph Lameter
2008-01-07 20:12 ` Pekka J Enberg
2008-01-06 17:51 ` Matt Mackall
2008-01-07 18:06 ` Pekka J Enberg
2008-01-07 19:03 ` Matt Mackall
2008-01-07 19:53 ` Pekka J Enberg
2008-01-07 20:44 ` Pekka J Enberg
2008-01-10 10:04 ` Pekka J Enberg
2008-01-09 19:15 ` [RFC PATCH] greatly reduce SLOB external fragmentation Matt Mackall
2008-01-09 22:43 ` Pekka J Enberg
2008-01-09 22:59 ` Matt Mackall
2008-01-10 10:02 ` Pekka J Enberg
2008-01-10 10:54 ` Pekka J Enberg
2008-01-10 15:44 ` Matt Mackall
2008-01-10 16:13 ` Linus Torvalds
2008-01-10 17:49 ` Matt Mackall
2008-01-10 18:28 ` Linus Torvalds
2008-01-10 18:42 ` Matt Mackall
2008-01-10 19:24 ` Christoph Lameter
2008-01-10 19:44 ` Matt Mackall
2008-01-10 19:51 ` Christoph Lameter
2008-01-10 19:41 ` Linus Torvalds
2008-01-10 19:46 ` Christoph Lameter
2008-01-10 19:53 ` Andi Kleen [this message]
2008-01-10 19:52 ` Christoph Lameter
2008-01-10 19:16 ` Christoph Lameter
2008-01-10 19:23 ` Matt Mackall
2008-01-10 19:31 ` Christoph Lameter
2008-01-10 21:25 ` Jörn Engel
2008-01-10 18:13 ` Andi Kleen
2008-07-30 21:51 ` Pekka J Enberg
2008-07-30 22:00 ` Linus Torvalds
2008-07-30 22:22 ` Pekka Enberg
2008-07-30 22:35 ` Linus Torvalds
2008-07-31 0:42 ` malc
2008-07-31 1:03 ` Matt Mackall
2008-07-31 1:09 ` Matt Mackall
2008-07-31 14:11 ` Andi Kleen
2008-07-31 15:25 ` Christoph Lameter
2008-07-31 16:03 ` Andi Kleen
2008-07-31 16:05 ` Christoph Lameter
2008-07-31 14:26 ` Christoph Lameter
2008-07-31 15:38 ` Matt Mackall
2008-07-31 15:42 ` Christoph Lameter
2008-01-10 2:46 ` Matt Mackall
2008-01-10 10:03 ` Pekka J Enberg
2008-01-03 20:31 ` [PATCH] procfs: provide slub's /proc/slabinfo Christoph Lameter
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