From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Heinz Ulrich Stille <hus@design-d.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: it821x eats CPU?
Date: Wed, 11 Oct 2006 20:13:41 +0100 [thread overview]
Message-ID: <1160594021.16513.68.camel@localhost.localdomain> (raw)
In-Reply-To: <200610070927.13713.hus@design-d.de>
Ar Sad, 2006-10-07 am 09:27 +0200, ysgrifennodd Heinz Ulrich Stille:
> Looking through the logs I notices that it821x was in "smart" mode,
> so I restarted the system with "noraid=1" to get into "pass through".
> Now everything is back to normal. A large dd did about 40MB/s without
> disturbing other processes.
In some configurations the it821x driver was not enabling DMA in smart
mode.
> Wasn't smart mode the one supposed to be the one reducing CPU load?
For RAID1 yes, otherwise not measurably at all.
prev parent reply other threads:[~2006-10-11 18:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-07 7:27 Heinz Ulrich Stille
2006-10-11 19:13 ` Alan Cox [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=1160594021.16513.68.camel@localhost.localdomain \
--to=alan@lxorguk.ukuu.org.uk \
--cc=hus@design-d.de \
--cc=linux-kernel@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
Powered by JetHome