linux-raid.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Pol Hallen <raid1@fuckaround.org>
To: linux-raid@vger.kernel.org
Subject: standard performance (write speed 20Mb/s)
Date: Sat, 16 Jul 2011 21:40:58 +0200	[thread overview]
Message-ID: <201107162140.58883.raid1@fuckaround.org> (raw)

Hi folks :-)

after assembled a new hw (xeon, ich10 controller with 5 disks of 2Tb wd - 
radi5) I have slow write performance:

20Mb/s :-(((

dd if=/dev/zero of=/share/raid/1Gb bs=1024M count=1
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 48.7203 s, 22.0 MB/s

I repeated same test also creating a 10Gb file.. same results..

write speed is better:

dd if=/share/raid/1Gb of=/dev/null
2097152+0 records in
2097152+0 records out
1073741824 bytes (1.1 GB) copied, 1.82054 s, 590 MB/s

20Mb/s is a disk/controller problem or controller can't do better?

hw is new, I already check all disks..

thanks!
 
Pol

             reply	other threads:[~2011-07-16 19:40 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-16 19:40 Pol Hallen [this message]
2011-07-17  4:26 ` standard performance (write speed 20Mb/s) Stan Hoeppner
2011-07-17  8:12   ` Pol Hallen
2011-07-17 12:11     ` John Robinson
2011-07-17 12:22       ` Iustin Pop
2011-07-17 12:51         ` John Robinson
2011-07-17 13:28           ` Iustin Pop
2011-07-18  9:04             ` John Robinson
2011-07-17 22:05         ` Stan Hoeppner
2011-07-27  5:42       ` Simon Matthews
2011-07-27  5:46         ` Roman Mamedov
2011-07-27 10:22         ` Stan Hoeppner
2011-07-27 10:26           ` John Robinson
2011-07-27 12:35             ` Joe Landman
2011-07-27 13:54             ` Stan Hoeppner
2011-07-17 23:03     ` Stan Hoeppner
2011-07-18 11:52       ` Pol Hallen
2011-07-21 17:07       ` standard performance (write speed ??Mb/s) - new raid5 array Pol Hallen
2011-07-22  0:05         ` Stan Hoeppner
2011-07-22  7:08           ` Pol Hallen
2011-07-22  8:13             ` Erwan Leroux
2011-07-17 16:48 ` standard performance (write speed 20Mb/s) Gordon Henderson
  -- strict thread matches above, loose matches on Subject: below --
2011-07-18 12:03 Pol Hallen
2011-07-20 12:31 ` Stan Hoeppner
2011-07-20 20:02   ` Pol Hallen
     [not found]     ` <CADNH=7HR7euaWem0tpLxJfRe0hYnRP5fwxJ6MC5vJeNf=T=PzA@mail.gmail.com>
2011-07-21  0:02       ` Stan Hoeppner
2011-07-21  6:57         ` Mathias Burén
2011-07-21  8:55     ` Erwan Leroux
2011-07-21 15:06       ` Paweł Brodacki
2011-07-21 15:30         ` Erwan Leroux
2011-07-21 15:42           ` Erwan Leroux
2011-07-25  6:39             ` Paweł Brodacki

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=201107162140.58883.raid1@fuckaround.org \
    --to=raid1@fuckaround.org \
    --cc=linux-raid@vger.kernel.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;
as well as URLs for NNTP newsgroup(s).