From: Peter Rabbitson <rabbit@rabbit.us>
Cc: linux-raid@vger.kernel.org
Subject: Re: LVM on raid10 - severe performance drop
Date: Mon, 11 Jun 2007 14:52:56 +0200 [thread overview]
Message-ID: <466D45A8.5060503@rabbit.us> (raw)
In-Reply-To: <20070610010644.GA24847@lanczos.q-leap.de>
Bernd Schubert wrote:
>
> Try to increase the read-ahead size of your lvm devices:
>
> blockdev --setra 8192 /dev/raid10/space
>
> or increase it at least to the same size as of your raid (blockdev
> --getra /dev/mdX).
This did the trick, although I am still lagging behind the raw md device
by about 3 - 4%. Thanks for pointing this out!
prev parent reply other threads:[~2007-06-11 12:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-09 23:56 LVM on raid10 - severe performance drop Peter Rabbitson
2007-06-10 1:06 ` Bernd Schubert
2007-06-11 12:52 ` Peter Rabbitson [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=466D45A8.5060503@rabbit.us \
--to=rabbit@rabbit.us \
--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 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.