From: William Lee Irwin III <wli@holomorphy.com>
To: Buddy Lumpkin <b.lumpkin@comcast.net>
Cc: orders@nodivisions.com, linux-kernel@vger.kernel.org
Subject: Re: why swap at all?
Date: Wed, 26 May 2004 00:55:06 -0700 [thread overview]
Message-ID: <20040526075506.GV1833@holomorphy.com> (raw)
In-Reply-To: <S265327AbUEZH12/20040526072728Z+1185@vger.kernel.org>
On Wed, May 26, 2004 at 12:31:16AM -0700, Buddy Lumpkin wrote:
> This is a really good point. I think the bar should be set at max
> performance for systems that never need to use the swap device.
> If someone wants to tune swap performance to their hearts content, so be it.
> But given cheap prices for memory, and the horrible best case performance
> for swap, an increase in swap performance should never, ever come at the
> expense of performance for a system that has been sized such that executable
> address spaces, libraries and anonymous memory will fit easily within
> physical ram.
> This of course doesn't address the VM paging storms that happen due to large
> amounts of file system writes. Once the pagecache fills up, dirty pages must
> be evicted from the pagecache so that new pages can be added to the
> pagecache.
If you've got a real performance issue, please describe it properly
instead of asserting without evidence the existence of one.
-- wli
next prev parent reply other threads:[~2004-05-26 7:55 UTC|newest]
Thread overview: 155+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-26 6:38 why swap at all? Anthony DiSante
2004-05-26 7:31 ` Buddy Lumpkin
2004-05-26 7:55 ` William Lee Irwin III [this message]
2004-05-26 8:30 ` Buddy Lumpkin
2004-05-26 8:44 ` Nick Piggin
2004-05-26 9:34 ` John Bradford
2004-05-26 9:48 ` Nick Piggin
2004-05-26 10:10 ` Matthias Schniedermeyer
2004-05-26 10:33 ` Nick Piggin
2004-05-26 10:58 ` Matthias Schniedermeyer
2004-05-26 11:19 ` Nick Piggin
2004-05-26 12:27 ` Matthias Schniedermeyer
2004-05-27 5:38 ` Nick Piggin
2004-05-26 12:37 ` Matthias Schniedermeyer
2004-05-26 13:06 ` Gianni Tedesco
2004-05-26 13:41 ` Matt H.
2004-05-26 13:55 ` Buddy Lumpkin
2004-05-27 5:14 ` Tom Felker
2004-05-27 6:02 ` Nick Piggin
2004-05-27 7:04 ` Bernd Eckenfels
2004-05-27 7:16 ` Oliver Neukum
2004-05-26 10:45 ` Martin Olsson
2004-05-26 11:25 ` Nick Piggin
2004-05-26 16:33 ` David Schwartz
2004-05-26 16:58 ` John Bradford
2004-05-26 23:32 ` Kyle Moffett
2004-05-27 8:05 ` John Bradford
2004-05-26 10:46 ` John Bradford
2004-05-26 11:46 ` Buddy Lumpkin
2004-05-26 11:39 ` Buddy Lumpkin
2004-05-26 9:42 ` Anthony DiSante
2004-05-26 9:58 ` Nick Piggin
2004-05-26 20:11 ` Wakko Warner
2004-05-27 5:59 ` Nick Piggin
2004-05-27 14:34 ` Wakko Warner
2004-05-26 10:40 ` Buddy Lumpkin
2004-05-26 13:15 ` Helge Hafting
2004-05-26 9:09 ` William Lee Irwin III
2004-05-26 11:38 ` Buddy Lumpkin
2004-05-26 12:12 ` Paulo Marques
2004-05-26 12:14 ` Nick Piggin
2004-05-26 12:40 ` Denis Vlasenko
2004-05-26 10:41 ` Denis Vlasenko
2004-05-26 12:07 ` Buddy Lumpkin
2004-05-26 12:06 ` Marc-Christian Petersen
2004-05-26 12:19 ` Denis Vlasenko
2004-05-26 13:48 ` Buddy Lumpkin
2004-05-26 12:33 ` Richard B. Johnson
2004-05-26 13:25 ` Buddy Lumpkin
2004-05-26 12:30 ` Rik van Riel
2004-05-26 10:44 ` Denis Vlasenko
2004-05-26 11:49 ` Buddy Lumpkin
2004-05-26 12:19 ` Rik van Riel
2004-05-26 12:55 ` Buddy Lumpkin
2004-05-26 8:27 ` Roger Luethi
2004-05-26 9:23 ` John Bradford
2004-05-26 9:30 ` Roger Luethi
2004-05-26 10:35 ` John Bradford
2004-05-26 10:37 ` Nick Piggin
2004-05-26 10:48 ` John Bradford
2004-05-26 13:01 ` Helge Hafting
2004-05-26 8:32 ` Denis Vlasenko
2004-05-26 9:00 ` Helge Hafting
2004-05-26 9:40 ` John Bradford
2004-05-26 13:06 ` Helge Hafting
2004-06-01 7:23 ` swappiness ignored Anthony DiSante
2004-06-01 9:36 ` Marc-Christian Petersen
2004-06-01 19:38 ` Anthony DiSante
2004-06-01 19:42 ` Marc-Christian Petersen
2004-06-02 19:54 ` Bill Davidsen
2004-06-02 23:33 ` Con Kolivas
2004-05-26 9:06 ` why swap at all? John Bradford
2004-05-26 12:31 ` Buddy Lumpkin
2004-05-26 10:02 ` Raphael Jacquot
2004-05-26 13:00 ` Satoshi Oshima
2004-05-26 13:38 ` William Lee Irwin III
-- strict thread matches above, loose matches on Subject: below --
2004-05-26 11:04 Nick Piggin
2004-05-26 11:57 Nick Piggin
2004-05-26 12:19 ` Buddy Lumpkin
2004-05-26 12:24 Nick Piggin
2004-05-26 13:03 ` Buddy Lumpkin
2004-05-26 13:27 ` Helge Hafting
2004-05-26 12:34 Piszcz, Justin Michael
2004-05-27 5:37 Nick Piggin
2004-05-27 17:27 ` Buddy Lumpkin
[not found] <fa.fegqf9v.kmidof@ifi.uio.no>
[not found] ` <fa.bqpvcrs.u648jq@ifi.uio.no>
2004-05-27 11:39 ` Andy Lutomirski
2004-05-28 21:37 ` Denis Vlasenko
2004-05-28 22:28 ` Bernd Eckenfels
2004-05-29 7:31 ` Denis Vlasenko
2004-05-31 10:49 ` jlnance
2004-06-01 11:57 ` Lenar Lõhmus
2004-06-01 12:27 ` Robin Rosenberg
2004-06-01 16:49 ` jlnance
2004-06-02 18:38 ` John Hendrikx
2004-06-01 12:21 ` David B. Stevens
2004-05-27 12:31 Piszcz, Justin Michael
2004-05-27 12:41 ` William Lee Irwin III
2004-05-27 15:59 ` John Bradford
2004-05-27 16:16 ` William Lee Irwin III
2004-06-03 13:38 ` Bill Davidsen
2004-05-31 19:34 Michael Brennan
2004-05-31 20:29 ` John Bradford
2004-05-31 22:47 ` Nick Piggin
2004-05-31 23:30 ` Bernd Eckenfels
2004-06-01 18:36 ` FabF
2004-06-01 19:02 ` Valdis.Kletnieks
2004-06-01 19:53 ` FabF
2004-06-01 20:00 ` Valdis.Kletnieks
2004-06-01 20:14 ` FabF
2004-06-01 20:22 ` Valdis.Kletnieks
2004-06-01 21:15 ` FabF
2004-06-01 21:40 ` Valdis.Kletnieks
2004-06-03 13:54 ` Bill Davidsen
2004-06-04 0:01 ` Nick Piggin
2004-06-01 23:17 ` Bernd Eckenfels
2004-06-02 5:38 ` FabF
2004-06-02 11:42 ` Con Kolivas
2004-06-02 12:22 ` John Bradford
2004-06-02 12:22 ` Con Kolivas
2004-06-02 17:06 ` FabF
2004-06-03 14:14 ` Bill Davidsen
2004-06-04 7:23 ` Buddy Lumpkin
2004-06-04 17:08 ` Bill Davidsen
2004-06-15 14:55 ` Charles Shannon Hendrix
2004-06-04 9:11 ` Catalin BOIE
2004-06-04 17:24 ` Bill Davidsen
2004-06-06 14:39 ` Rik van Riel
2004-06-02 17:59 ` Valdis.Kletnieks
2004-06-02 18:30 ` FabF
2004-06-02 23:54 ` Con Kolivas
2004-06-03 16:16 ` FabF
2004-06-03 23:56 ` Con Kolivas
2004-06-04 0:16 ` Con Kolivas
2004-06-03 14:18 ` Bill Davidsen
2004-06-03 14:27 ` Con Kolivas
2004-06-02 17:52 ` Valdis.Kletnieks
2004-06-02 3:50 ` Tim Connors
2004-06-02 17:45 ` Valdis.Kletnieks
2004-06-01 8:34 ` John Bradford
2004-06-01 8:32 ` William Lee Irwin III
2004-06-01 8:50 ` John Bradford
2004-06-01 8:54 ` William Lee Irwin III
2004-06-01 9:10 ` John Bradford
2004-06-08 1:18 ` Tim Connors
2004-06-08 5:29 ` Denis Vlasenko
2004-06-01 9:38 ` Buddy Lumpkin
2004-06-01 10:13 ` Tim Connors
2004-06-01 10:24 ` William Lee Irwin III
2004-06-01 11:19 ` Tim Connors
[not found] <fa.amhil9e.o5kt1u@ifi.uio.no>
[not found] ` <fa.kfm8lru.1l2mdp4@ifi.uio.no>
2004-06-08 15:12 ` Ray Bryant
2004-06-08 15:12 ` Ray Bryant
2004-06-08 15:15 ` Ray Bryant
2004-06-08 15:15 ` Ray Bryant
2004-06-09 19:24 ` Bill Davidsen
2004-06-09 19:24 ` Bill Davidsen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040526075506.GV1833@holomorphy.com \
--to=wli@holomorphy.com \
--cc=b.lumpkin@comcast.net \
--cc=linux-kernel@vger.kernel.org \
--cc=orders@nodivisions.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.