From: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [patch 10/19] No Reclaim LRU Infrastructure
Date: Fri, 11 Jan 2008 10:43:43 -0500 [thread overview]
Message-ID: <1200066224.5304.6.camel@localhost> (raw)
In-Reply-To: <20080111133048.FD5C.KOSAKI.MOTOHIRO@jp.fujitsu.com>
On Fri, 2008-01-11 at 13:36 +0900, KOSAKI Motohiro wrote:
> Hi Rik
>
> > +config NORECLAIM
> > + bool "Track non-reclaimable pages (EXPERIMENTAL; 64BIT only)"
> > + depends on EXPERIMENTAL && 64BIT
> > + help
> > + Supports tracking of non-reclaimable pages off the [in]active lists
> > + to avoid excessive reclaim overhead on large memory systems. Pages
> > + may be non-reclaimable because: they are locked into memory, they
> > + are anonymous pages for which no swap space exists, or they are anon
> > + pages that are expensive to unmap [long anon_vma "related vma" list.]
>
> Why do you select to default is NO ?
> I think this is really improvement and no one of 64bit user
> hope turn off without NORECLAIM developer :)
>
Hello, Kosaki-san:
This was my doing. I left the default == NO during
development/experimemental stage so that one would have to take explicit
action to enable this function. If the feature makes it into mainline
and we decide that the default should be 'yes', that will be an easy
change.
Thanks for looking at this,
Lee Schermerhorn
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next prev parent reply other threads:[~2008-01-11 15:43 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-08 20:59 [patch 00/19] VM pageout scalability improvements Rik van Riel
2008-01-08 20:59 ` [patch 01/19] move isolate_lru_page() to vmscan.c Rik van Riel
2008-01-08 22:03 ` Christoph Lameter
2008-01-08 20:59 ` [patch 02/19] free swap space on swap-in/activation Rik van Riel
2008-01-08 22:10 ` Christoph Lameter
2008-01-08 20:59 ` [patch 03/19] define page_file_cache() function Rik van Riel
2008-01-08 22:18 ` Christoph Lameter
2008-01-08 22:28 ` Rik van Riel
2008-01-09 4:26 ` KAMEZAWA Hiroyuki
2008-01-08 20:59 ` [patch 04/19] Use an indexed array for LRU variables Rik van Riel
2008-01-08 20:59 ` [patch 05/19] split LRU lists into anon & file sets Rik van Riel
2008-01-08 22:22 ` Christoph Lameter
2008-01-08 22:36 ` Rik van Riel
2008-01-08 22:42 ` Christoph Lameter
2008-01-09 2:45 ` Rik van Riel
2008-01-09 4:41 ` KAMEZAWA Hiroyuki
2008-01-10 2:21 ` Balbir Singh
2008-01-10 2:36 ` KAMEZAWA Hiroyuki
2008-01-10 3:26 ` Balbir Singh
2008-01-10 4:23 ` KAMEZAWA Hiroyuki
2008-01-10 2:28 ` KAMEZAWA Hiroyuki
2008-01-10 2:37 ` Rik van Riel
2008-01-11 3:59 ` KOSAKI Motohiro
2008-01-11 15:37 ` Rik van Riel
2008-01-11 6:24 ` KOSAKI Motohiro
2008-01-11 15:42 ` Rik van Riel
2008-01-11 15:59 ` Lee Schermerhorn
2008-01-11 16:15 ` Rik van Riel
2008-01-11 19:51 ` Lee Schermerhorn
2008-01-11 15:50 ` Lee Schermerhorn
2008-01-11 16:06 ` Rik van Riel
2008-01-11 7:35 ` KOSAKI Motohiro
2008-01-11 15:46 ` Rik van Riel
2008-01-14 23:57 ` KOSAKI Motohiro
2008-01-30 3:25 ` KOSAKI Motohiro
2008-01-30 8:57 ` KOSAKI Motohiro
2008-01-30 14:29 ` Lee Schermerhorn
2008-01-31 1:17 ` KOSAKI Motohiro
2008-01-31 10:48 ` Rik van Riel
2008-01-31 10:59 ` KOSAKI Motohiro
2008-02-07 0:35 ` Rik van Riel
2008-02-07 1:20 ` KOSAKI Motohiro
2008-02-07 1:36 ` Rik van Riel
2008-01-08 20:59 ` [patch 06/19] SEQ replacement for anonymous pages Rik van Riel
2008-01-08 20:59 ` [patch 07/19] (NEW) add some sanity checks to get_scan_ratio Rik van Riel
2008-01-09 4:16 ` KAMEZAWA Hiroyuki
2008-01-09 12:53 ` Rik van Riel
2008-01-08 20:59 ` [patch 08/19] add newly swapped in pages to the inactive list Rik van Riel
2008-01-08 22:28 ` Christoph Lameter
2008-01-08 20:59 ` [patch 09/19] (NEW) more aggressively use lumpy reclaim Rik van Riel
2008-01-08 22:30 ` Christoph Lameter
2008-01-14 15:28 ` Mel Gorman
2008-01-08 20:59 ` [patch 10/19] No Reclaim LRU Infrastructure Rik van Riel
2008-01-11 4:36 ` KOSAKI Motohiro
2008-01-11 15:43 ` Lee Schermerhorn [this message]
2008-01-15 0:06 ` KOSAKI Motohiro
2008-01-08 20:59 ` [patch 11/19] Non-reclaimable page statistics Rik van Riel
2008-01-08 20:59 ` [patch 12/19] scan noreclaim list for reclaimable pages Rik van Riel
2008-01-08 20:59 ` [patch 13/19] ramfs pages are non-reclaimable Rik van Riel
2008-01-08 20:59 ` [patch 14/19] SHM_LOCKED pages are nonreclaimable Rik van Riel
2008-01-08 20:59 ` [patch 15/19] non-reclaimable mlocked pages Rik van Riel
2008-01-08 20:59 ` [patch 16/19] mlock vma pages under mmap_sem held for read Rik van Riel
2008-01-08 20:59 ` [patch 17/19] handle mlocked pages during map/unmap and truncate Rik van Riel
2008-01-08 20:59 ` [patch 18/19] account mlocked pages Rik van Riel
2008-01-11 12:51 ` Balbir Singh
2008-01-13 5:18 ` Rik van Riel
2008-01-08 20:59 ` [patch 19/19] cull non-reclaimable anon pages from the LRU at fault time Rik van Riel
2008-01-10 4:39 ` [patch 00/19] VM pageout scalability improvements Mike Snitzer
2008-01-10 15:41 ` Rik van Riel
2008-01-10 16:08 ` Mike Snitzer
2008-01-11 10:41 ` Balbir Singh
2008-01-11 15:38 ` Rik van Riel
2008-01-11 11:47 ` Balbir Singh
2008-01-16 6:17 ` rvr split LRU minor regression ? KOSAKI Motohiro
-- strict thread matches above, loose matches on Subject: below --
2008-01-02 22:41 [patch 00/19] VM pageout scalability improvements linux-kernel
2008-01-02 22:41 ` [patch 10/19] No Reclaim LRU Infrastructure linux-kernel
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