LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Alistair Riddell <ali@gwc.org.uk>
To: David Chow <davidchow@rcn.com.hk>
Cc: raid@ddx.a2000.nu, linux-kernel@vger.kernel.org,
linux-raid@vger.kernel.org
Subject: Re: write/read cache raid5
Date: Tue, 9 Oct 2001 10:06:24 +0100 (BST) [thread overview]
Message-ID: <Pine.LNX.4.21.0110091004450.27693-100000@frank.gwc.org.uk> (raw)
In-Reply-To: <3BC26BDE.45D893A6@rcn.com.hk>
On Tue, 9 Oct 2001, David Chow wrote:
> Yes my server serve lots of clients and have lots of NICs even
> gigabit... how can I increase write/read cache on RAID5 ? It is better
> performed when big cache allows on top (before) raid computation work
> and physical disk writes.
In that case more memory will certainly help. You might like to check out
Jens Axboe's block-highmem patch if you have more than 1GB of RAM. It
allows hardware to DMA direct to high memory, rather than using bounce
buffers, which can increase performance considerably.
--
Alistair Riddell - BOFH
IT Manager, George Watson's College, Edinburgh
Tel: +44 131 447 7931 Ext 176 Fax: +44 131 452 8594
Microsoft - because god hates us
next prev parent reply other threads:[~2001-10-09 9:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E15qh8U-0001o8-00@the-village.bc.nu>
2001-10-08 21:10 ` raid
2001-10-08 21:17 ` Alistair Riddell
2001-10-09 3:15 ` David Chow
2001-10-09 9:06 ` Alistair Riddell [this message]
2001-10-08 21:29 ` Alan Cox
2001-10-13 13:14 ` Nico Dummer
2001-10-08 12:01 raid
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=Pine.LNX.4.21.0110091004450.27693-100000@frank.gwc.org.uk \
--to=ali@gwc.org.uk \
--cc=davidchow@rcn.com.hk \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-raid@vger.kernel.org \
--cc=raid@ddx.a2000.nu \
--subject='Re: write/read cache raid5' \
/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
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).