From: Nitin Gupta <ngupta@vflare.org>
To: Al Boldi <a1426z@gawab.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Matthew Wilcox <willy@linux.intel.com>,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: compcache as a pre-swap area
Date: Fri, 14 Aug 2009 10:23:56 +0530 [thread overview]
Message-ID: <4A84EDE4.1080605@vflare.org> (raw)
In-Reply-To: <200908140702.23947.a1426z@gawab.com>
On 08/14/2009 09:32 AM, Al Boldi wrote:
> Nitin Gupta wrote:
>> compcache is really not really a swap replacement. Its just another
>> swap device that
>> compresses data and stores it in memory itself. You can have disk
>> based swaps along
>> with ramzswap (name of block device).
>
> So once compcache fills up, it will start to age its contents into normal
> swap?
>
This is desirable but not yet implemented. For now, if 'backing swap' is used,
compcache will forward incompressible pages to the backing swap device. If
compcache fills up, kernel will simply send further swap-outs to swap device
which comes next in priority.
Nitin
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next prev parent reply other threads:[~2009-08-14 4:54 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-12 14:37 [PATCH] swap: send callback when swap slot is freed Nitin Gupta
2009-08-12 22:48 ` Hugh Dickins
2009-08-13 2:30 ` Nitin Gupta
2009-08-13 6:53 ` Peter Zijlstra
2009-08-13 14:44 ` Nitin Gupta
2009-08-13 17:45 ` Hugh Dickins
2009-08-13 2:41 ` Nitin Gupta
2009-08-13 5:05 ` compcache as a pre-swap area (was: [PATCH] swap: send callback when swap slot is freed) Al Boldi
2009-08-13 17:31 ` Nitin Gupta
2009-08-14 4:02 ` Al Boldi
2009-08-14 4:53 ` Nitin Gupta [this message]
2009-08-14 15:49 ` compcache as a pre-swap area Al Boldi
2009-08-15 11:00 ` Al Boldi
2009-08-13 15:13 ` Discard support (was Re: [PATCH] swap: send callback when swap slot is freed) Matthew Wilcox
2009-08-13 15:17 ` david
2009-08-13 15:26 ` Matthew Wilcox
2009-08-13 15:43 ` James Bottomley
2009-08-13 18:22 ` Ric Wheeler
2009-08-13 16:13 ` Nitin Gupta
2009-08-13 16:26 ` Markus Trippelsdorf
2009-08-13 16:33 ` david
2009-08-13 18:15 ` Greg Freemyer
2009-08-13 19:18 ` James Bottomley
2009-08-13 20:31 ` Richard Sharpe
2009-08-14 22:03 ` Mark Lord
2009-08-14 22:54 ` Greg Freemyer
2009-08-15 13:12 ` Mark Lord
2009-08-13 20:44 ` david
2009-08-13 20:54 ` Bryan Donlan
2009-08-14 22:10 ` Mark Lord
2009-08-14 23:21 ` Chris Worley
2009-08-14 23:45 ` Matthew Wilcox
2009-08-15 0:19 ` Chris Worley
2009-08-15 0:30 ` Greg Freemyer
2009-08-15 0:38 ` Chris Worley
2009-08-15 1:55 ` Greg Freemyer
2009-08-15 13:20 ` Mark Lord
2009-08-16 22:52 ` Chris Worley
2009-08-17 2:03 ` Mark Lord
2009-08-15 12:59 ` James Bottomley
2009-08-15 13:22 ` Mark Lord
2009-08-15 13:55 ` James Bottomley
2009-08-15 17:39 ` jim owens
2009-08-16 17:08 ` Robert Hancock
2009-08-16 14:05 ` Alan Cox
2009-08-16 14:16 ` Mark Lord
2009-08-16 15:34 ` Arjan van de Ven
2009-08-16 15:44 ` Theodore Tso
2009-08-16 17:28 ` Mark Lord
2009-08-16 17:37 ` Mark Lord
2009-08-17 16:30 ` Bill Davidsen
2009-08-17 16:56 ` jim owens
2009-08-17 17:14 ` Bill Davidsen
2009-08-17 17:37 ` jim owens
2009-08-16 17:37 ` Mark Lord
2009-08-16 15:52 ` James Bottomley
2009-08-16 16:32 ` Mark Lord
2009-08-16 18:07 ` James Bottomley
2009-08-16 18:19 ` Mark Lord
2009-08-16 18:24 ` James Bottomley
2009-08-17 16:37 ` Bill Davidsen
2009-08-17 17:08 ` Greg Freemyer
2009-08-17 17:19 ` James Bottomley
2009-08-17 18:16 ` Ric Wheeler
2009-08-17 18:21 ` Greg Freemyer
2009-08-17 19:18 ` James Bottomley
2009-08-17 20:19 ` Mark Lord
2009-08-17 20:28 ` James Bottomley
2009-08-17 20:28 ` Mark Lord
2009-08-16 16:59 ` Christoph Hellwig
2009-08-17 4:24 ` Douglas Gilbert
2009-08-17 13:56 ` James Bottomley
2009-08-17 14:10 ` Matthew Wilcox
2009-08-17 19:12 ` Christoph Hellwig
2009-08-17 19:24 ` James Bottomley
2009-08-16 21:50 ` Discard support Roland Dreier
2009-08-16 22:06 ` Jeff Garzik
2009-08-16 22:13 ` Theodore Tso
2009-08-16 22:51 ` Mark Lord
2009-08-16 19:29 ` Discard support (was Re: [PATCH] swap: send callback when swap slot is freed) Alan Cox
2009-08-16 23:05 ` John Robinson
2009-08-17 2:05 ` Mark Lord
2009-08-13 21:28 ` Greg Freemyer
2009-08-13 22:20 ` Richard Sharpe
2009-08-14 0:19 ` Greg Freemyer
[not found] ` <46b8a8850908131758s781b07f6v2729483c0e50ae7a@mail.gmail.com>
2009-08-14 21:33 ` Greg Freemyer
2009-08-14 21:56 ` Discard support Roland Dreier
2009-08-14 22:10 ` Greg Freemyer
2009-08-13 17:19 ` Discard support (was Re: [PATCH] swap: send callback when swap slot is freed) Hugh Dickins
2009-08-13 18:08 ` Douglas Gilbert
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