From: Martin Knoblauch <spamtrap@knobisoft.de>
To: Robert Hancock <hancockr@shaw.ca>, Jens Axboe <jens.axboe@oracle.com>
Cc: Martin Knoblauch <spamtrap@knobisoft.de>,
linux-kernel@vger.kernel.org,
Peter zijlstra <a.p.zijlstra@chello.nl>,
mingo@redhat.com
Subject: Re: Understanding I/O behaviour - next try
Date: Thu, 30 Aug 2007 03:26:22 -0700 (PDT) [thread overview]
Message-ID: <504223.55411.qm@web32613.mail.mud.yahoo.com> (raw)
In-Reply-To: <46D58264.6050403@shaw.ca>
--- Robert Hancock <hancockr@shaw.ca> wrote:
>
> I saw a bulletin from HP recently that sugggested disabling the
> write-back cache on some Smart Array controllers as a workaround
> because
> it reduced performance in applications that did large bulk writes.
> Presumably they are planning on releasing some updated firmware that
> fixes this eventually..
>
> --
> Robert Hancock Saskatoon, SK, Canada
> To email, remove "nospam" from hancockr@nospamshaw.ca
> Home Page: http://www.roberthancock.com/
>
Robert,
just checked it out. At least with the "6i", you do not want to
disable the WBC :-) Performance really goes down the toilet for all
cases.
Do you still have a pointer to that bulletin?
Cheers
Martin
------------------------------------------------------
Martin Knoblauch
email: k n o b i AT knobisoft DOT de
www: http://www.knobisoft.de
next prev parent reply other threads:[~2007-08-30 10:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.tV0SjP5wHRgCEzqJw2C8w4+Fh90@ifi.uio.no>
[not found] ` <fa.NN9klzYbZhoZ+YoOWgrMeLtzlHE@ifi.uio.no>
2007-08-29 14:27 ` Robert Hancock
2007-08-30 10:26 ` Martin Knoblauch [this message]
2007-08-28 15:53 Martin Knoblauch
[not found] ` <20070829013858.GA7721@mail.ustc.edu.cn>
2007-08-29 1:38 ` Fengguang Wu
2007-08-29 8:15 ` Martin Knoblauch
[not found] ` <20070829084039.GA32016@mail.ustc.edu.cn>
2007-08-29 8:40 ` Fengguang Wu
2007-08-29 9:22 ` Martin Knoblauch
2007-09-13 14:17 ` Peter Zijlstra
2007-08-29 9:48 ` Jens Axboe
2007-08-29 14:26 ` Martin Knoblauch
2007-08-30 10:50 ` Martin Knoblauch
2007-08-29 16:25 ` Chuck Ebbert
2007-08-29 21:43 ` Martin Knoblauch
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