All of lore.kernel.org
 help / color / mirror / Atom feed
From: Vladimir Saveliev <vs@namesys.com>
To: linux-kernel@vger.kernel.org
Cc: reiserfs-dev@namesys.com
Subject: file write performance drop between 2.5.60 and 2.5.70
Date: Wed, 4 Jun 2003 20:17:53 +0400	[thread overview]
Message-ID: <200306042017.53435.vs@namesys.com> (raw)

Hi

It looks like file write performance dropped somewhere between 2.5.60 and 
2.5.70.
Doing
time dd if=/dev/zero of=file bs=4096 count=60000

on a box with Xeon(TM) CPU 2.40GHz and 1gb of RAM
I get for ext2
2.5.60: 	real	1.42 sys 0.77
2.5.70: 	real 1.73 sys 1.23
for reiserfs
2.5.60: 	real 1.62 sys 1.56
2.5.70: 	real 1.90 sys 1.86

Any ideas of what could cause this drop?

Thanks,
vs



             reply	other threads:[~2003-06-04 16:04 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-06-04 16:17 Vladimir Saveliev [this message]
2003-06-04 18:02 ` file write performance drop between 2.5.60 and 2.5.70 Felipe Alfaro Solana
2003-06-05 18:37   ` Mike Fedyk
2003-06-05 19:24     ` Felipe Alfaro Solana
2003-06-05 19:27       ` OFFTOPIC: " uaca
2003-06-05  1:52 ` Andrew Morton

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=200306042017.53435.vs@namesys.com \
    --to=vs@namesys.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=reiserfs-dev@namesys.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.