From: "Stephen C. Tweedie" <sct@redhat.com>
To: Rik van Riel <H.H.vanRiel@phys.uu.nl>
Cc: Billy Harvey <Billy.Harvey@thrillseeker.net>,
"Stephen C. Tweedie" <sct@redhat.com>,
Linux MM <linux-mm@kvack.org>,
Linux Kernel <linux-kernel@vger.rutgers.edu>
Subject: Re: [PATCH] swapin readahead and fixes
Date: Tue, 8 Dec 1998 12:35:56 GMT [thread overview]
Message-ID: <199812081235.MAA02355@dax.scot.redhat.com> (raw)
In-Reply-To: <Pine.LNX.3.96.981208032438.8407C-100000@mirkwood.dummy.home>
Hi,
On Tue, 8 Dec 1998 03:31:25 +0100 (CET), Rik van Riel
<H.H.vanRiel@phys.uu.nl> said:
> On a swapout, we will scan ahead of where we are (p->swap_address)
> and swap out the next number of pages too.
Yes, but be aware that for good performance you need to combine this
with a mechanism to ensure swap space does not become fragmented, and
you also need a swap-behind mechanism for sequential accesses (so that
if an application is scanning a data set sequentially, the un-accessed
space behind the current application "cursor" is being removed from
memory just as fast as the stuff about to be accessed is being brought
in).
--Stephen
--
This is a majordomo managed list. To unsubscribe, send a message with
the body 'unsubscribe linux-mm me@address' to: majordomo@kvack.org
next prev parent reply other threads:[~1998-12-08 12:36 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-12-03 17:56 Rik van Riel
1998-12-04 11:34 ` Stephen C. Tweedie
1998-12-04 14:02 ` Rik van Riel
1998-12-04 14:34 ` Stephen C. Tweedie
1998-12-05 9:46 ` Gerard Roudier
1998-12-07 16:50 ` Stephen C. Tweedie
1998-12-08 1:34 ` Billy Harvey
1998-12-08 2:31 ` Rik van Riel
1998-12-08 2:51 ` Billy Harvey
1998-12-08 3:00 ` Rik van Riel
1998-12-08 12:35 ` Stephen C. Tweedie [this message]
1998-12-08 13:51 ` Rik van Riel
1998-12-09 2:41 ` Drago Goricanec
1998-12-09 11:58 ` Stephen C. Tweedie
1998-12-08 12:21 ` Stephen C. Tweedie
1998-12-05 10:47 ` Gerard Roudier
1998-12-04 19:25 ` Chris Evans
1998-12-04 20:47 ` Rik van Riel
1998-12-05 18:59 ` Alan Cox
1998-12-05 19:02 ` Rik van Riel
1998-12-06 5:20 ` Rik van Riel
1998-12-06 5:23 ` Steve VanDevender
1998-12-07 11:52 ` Rik van Riel
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=199812081235.MAA02355@dax.scot.redhat.com \
--to=sct@redhat.com \
--cc=Billy.Harvey@thrillseeker.net \
--cc=H.H.vanRiel@phys.uu.nl \
--cc=linux-kernel@vger.rutgers.edu \
--cc=linux-mm@kvack.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox