From: Jan Niehusmann <jan@gondor.com>
To: Craig Kulesa <ckulesa@loke.as.arizona.edu>
Cc: linux-mm@kvack.org
Subject: Re: PATCH: Possible solution to VM problems (take 2)
Date: Thu, 18 May 2000 12:59:21 +0200 [thread overview]
Message-ID: <20000518125921.A1570@gondor.com> (raw)
In-Reply-To: <Pine.LNX.4.21.0005180221450.7333-100000@loke.as.arizona.edu>; from ckulesa@loke.as.arizona.edu on Thu, May 18, 2000 at 03:17:25AM -0700
On Thu, May 18, 2000 at 03:17:25AM -0700, Craig Kulesa wrote:
> A stubborn problem that remains is the behavior when lots of
> dirty pages pile up quickly. Doing a giant 'dd' from /dev/zero to a
> file on disk still causes gaps of unresponsiveness. Here's a short vmstat
> session on a 128 MB PIII system performing a 'dd if=/dev/zero of=dummy.dat
> bs=1024k count=256':
While 'dd if=/dev/zero of=file' can, of course, generate dirty pages at
an insane rate, I see the same unresponsiveness when doing cp -a from
one filesystem to another. (and even from a slow harddisk to a faster one).
Shouldn't the writing of dirty pages occur at least at the same rate
as reading data from the slower hard disk?
(My system: linux-2.3.99pre9-2, wait_buffers_02.patch,
truncate_inode_pages_01.patch, lvm, PII/333Mhz, 256MB, ide & scsi hard disks)
Jan
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux.eu.org/Linux-MM/
next prev parent reply other threads:[~2000-05-18 10:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-05-14 9:48 Summary of recent VM behavior [2.3.99-pre8] Craig Kulesa
2000-05-18 10:17 ` PATCH: Possible solution to VM problems (take 2) Craig Kulesa
2000-05-18 10:59 ` Jan Niehusmann [this message]
2000-05-18 13:41 ` Rik van Riel
2000-05-18 13:49 ` Stephen C. Tweedie
-- strict thread matches above, loose matches on Subject: below --
2000-05-16 19:32 [dirtypatch] quickhack to make pre8/9 behave (fwd) Rik van Riel
2000-05-17 0:28 ` PATCH: less dirty (Re: [dirtypatch] quickhack to make pre8/9 behave (fwd)) Juan J. Quintela
2000-05-17 20:45 ` PATCH: Possible solution to VM problems Juan J. Quintela
2000-05-17 23:31 ` PATCH: Possible solution to VM problems (take 2) Juan J. Quintela
2000-05-18 0:12 ` Juan J. Quintela
2000-05-18 1:07 ` Rik van Riel
2000-05-21 8:14 ` Linus Torvalds
2000-05-21 16:01 ` Rik van Riel
2000-05-21 17:15 ` Linus Torvalds
2000-05-21 19:02 ` Rik van Riel
2000-05-18 5:58 Neil Schemenauer
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=20000518125921.A1570@gondor.com \
--to=jan@gondor.com \
--cc=ckulesa@loke.as.arizona.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 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.