From: Andrew Klaassen <clawsoon@yahoo.com>
To: Mikael Abrahamsson <swmike@swm.pp.se>,
Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: Joshua Baker-LePain <jlb17@duke.edu>,
linux-ide-arrays@lists.math.uh.edu, linux-raid@vger.kernel.org
Subject: Re: 3ware 9650 tips
Date: Sat, 14 Jul 2007 09:11:58 -0700 (PDT) [thread overview]
Message-ID: <164595.17925.qm@web60020.mail.yahoo.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0707141100230.29164@uplift.swm.pp.se>
--- Mikael Abrahamsson <swmike@swm.pp.se> wrote:
> Take your 3ware HW-raid, do a dd (read or write) to
> the device and see it
> being very quick (because it can fit all the data
> into its cache as it
> either reads or writes), then put a filesystem on it
> and do writes there,
> especially journaled writes, and see write speed go
> down to 1/10 or so.
How does non-cached performance tend to compare?
Andrew
____________________________________________________________________________________
Looking for a deal? Find great prices on flights and hotels with Yahoo! FareChase.
http://farechase.yahoo.com/
prev parent reply other threads:[~2007-07-14 16:11 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <alpine.LRH.0.999.0707131356520.25773@chaos.egr.duke.edu>
2007-07-13 18:35 ` 3ware 9650 tips Justin Piszcz
2007-07-13 18:54 ` Jon Collette
2007-07-13 19:36 ` Justin Piszcz
2007-07-16 2:41 ` David Chinner
2007-07-16 12:22 ` David Chinner
2007-07-16 12:39 ` Bernd Schubert
2007-07-16 15:50 ` Eric Sandeen
2007-07-16 22:21 ` David Chinner
2007-07-16 15:43 ` Joshua Baker-LePain
2007-07-16 17:15 ` [Advocacy] " Bryan J. Smith
2007-07-16 17:40 ` Al Boldi
2007-07-16 17:48 ` Matthew Wilcox
2007-07-16 18:28 ` [RFC] VFS: data=ordered (was: [Advocacy] Re: 3ware 9650 tips) Al Boldi
2007-07-16 19:02 ` Matthew Wilcox
2007-07-16 18:38 ` [Advocacy] Re: 3ware 9650 tips Bryan J. Smith
2007-07-16 17:34 ` Stuart Levy
2007-07-16 18:44 ` [Advocacy] " Bryan J. Smith
2007-07-17 17:30 ` Simon Matter
2007-07-13 19:04 ` Joshua Baker-LePain
2007-07-13 23:30 ` Michael Tokarev
2007-07-14 1:23 ` Andrew Klaassen
2007-07-14 8:08 ` Justin Piszcz
2007-07-14 16:10 ` Andrew Klaassen
2007-07-14 16:11 ` Justin Piszcz
2007-07-14 16:14 ` Andrew Klaassen
2007-07-14 16:18 ` Justin Piszcz
2007-07-14 9:04 ` Mikael Abrahamsson
2007-07-14 16:11 ` Andrew Klaassen [this message]
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=164595.17925.qm@web60020.mail.yahoo.com \
--to=clawsoon@yahoo.com \
--cc=jlb17@duke.edu \
--cc=jpiszcz@lucidpixels.com \
--cc=linux-ide-arrays@lists.math.uh.edu \
--cc=linux-raid@vger.kernel.org \
--cc=swmike@swm.pp.se \
/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.