From: Hideo AOKI <aoki@sdl.hitachi.co.jp>
To: Andrew Morton <akpm@osdl.org>
Cc: ak@muc.de, linux-kernel@vger.kernel.org, riel@redhat.com
Subject: Re: [PATCH 2.6] vm-thrashing-control-tuning
Date: Thu, 07 Oct 2004 22:51:10 +0900 [thread overview]
Message-ID: <416549CE.2070202@sdl.hitachi.co.jp> (raw)
In-Reply-To: <20041006155000.46c9acdc.akpm@osdl.org>
[-- Attachment #1: Type: text/plain, Size: 364 bytes --]
Andrew Morton wrote:
>>[vm-thrashing-control-tuning.patch text/plain (3256 bytes)]
>
> Please send an additional patch to update Documentation/filesystems/proc.txt
> and Documentation/sysctl/vm.txt
Certainly.
Attached patch is a short description for /proc/sys/vm/swap_token_timeout.
Best regards,
Hideo AOKI
Systems Development Laboratory, Hitachi, Ltd.
[-- Attachment #2: vm-doc-swap-token-timeout.patch --]
[-- Type: text/plain, Size: 1792 bytes --]
filesystems/proc.txt | 8 ++++++++
sysctl/vm.txt | 2 +-
2 files changed, 9 insertions(+), 1 deletion(-)
Signed-off-by: Hideo Aoki <aoki@sdl.hitachi.co.jp>
diff -uprN linux-2.6.9-rc3-vm-thrashing-control-tuning/Documentation/filesystems/proc.txt linux-2.6.9-rc3-vm-tuning-doc/Documentation/filesystems/proc.txt
--- linux-2.6.9-rc3-vm-thrashing-control-tuning/Documentation/filesystems/proc.txt 2004-10-07 10:47:23.000000000 +0900
+++ linux-2.6.9-rc3-vm-tuning-doc/Documentation/filesystems/proc.txt 2004-10-07 21:31:37.316226768 +0900
@@ -1269,6 +1269,14 @@ block_dump
block_dump enables block I/O debugging when set to a nonzero value. More
information on block I/O debugging is in Documentation/laptop-mode.txt.
+swap_token_timeout
+------------------
+
+This file contains valid hold time of swap out protection token. The Linux
+VM has token based thrashing control mechanism and uses the token to prevent
+unnecessary page faults in thrashing situation. The unit of the value is
+second. The value would be useful to tune thrashing behavior.
+
2.5 /proc/sys/dev - Device specific parameters
----------------------------------------------
diff -uprN linux-2.6.9-rc3-vm-thrashing-control-tuning/Documentation/sysctl/vm.txt linux-2.6.9-rc3-vm-tuning-doc/Documentation/sysctl/vm.txt
--- linux-2.6.9-rc3-vm-thrashing-control-tuning/Documentation/sysctl/vm.txt 2004-10-07 10:47:53.000000000 +0900
+++ linux-2.6.9-rc3-vm-tuning-doc/Documentation/sysctl/vm.txt 2004-10-07 16:48:56.969591368 +0900
@@ -31,7 +31,7 @@ Currently, these files are in /proc/sys/
dirty_ratio, dirty_background_ratio, dirty_expire_centisecs,
dirty_writeback_centisecs, vfs_cache_pressure, laptop_mode,
-block_dump:
+block_dump, swap_token_timeout:
See Documentation/filesystems/proc.txt
next prev parent reply other threads:[~2004-10-07 13:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <2LXI2-3a5-21@gated-at.bofh.it>
2004-10-05 13:57 ` [PATCH 2.6] vm-thrashing-control-tuning Andi Kleen
2004-10-06 12:19 ` Hideo AOKI
2004-10-06 22:50 ` Andrew Morton
2004-10-07 13:51 ` Hideo AOKI [this message]
2004-10-07 14:10 ` [PATCH 2.6] Documentation/filesystems/proc.txt Hideo AOKI
2004-10-11 8:39 ` [PATCH 2.6] vm-thrashing-control-tuning Wen-chien Jesse Sung
2004-10-11 12:11 ` Andi Kleen
2004-10-05 13:36 Hideo AOKI
2004-10-05 13:50 ` Rik van Riel
2004-10-06 13:42 ` Hideo AOKI
2004-10-05 18:03 ` Andrew Morton
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