From: Robert Hancock <hancockr@shaw.ca>
To: Imre Gergely <imre.gergely@astral.ro>
Cc: linux-kernel@vger.kernel.org
Subject: Re: irq balancing question
Date: Fri, 23 Feb 2007 08:39:13 -0600 [thread overview]
Message-ID: <45DEFC91.2050908@shaw.ca> (raw)
In-Reply-To: <fa.o8VX4Uax4/73QDX3vvhLW5NBvRE@ifi.uio.no>
Imre Gergely wrote:
> hi
>
> i have a SMP with 2x duo-core Opteron processors, and i have an ethernet card
> (eth0). i want to balance the interrupts generated by the card to all 4
> processors. i can do this by writing to smp_affinity, but on another machine it
> get's done by "default", without doing anything.
>
> is this irq balancing a feature in the chipset, or driver, or kernel ? i got
> the idea of the smp_affinity stuff, and i've set it to "f", but nothing
> happens, i mean i see only one CPU getting the interrupts.
>
> i'm using kernel 2.6.18, but tried with 2.6.19, too.
You need to run the irqbalance daemon to do this, unless the interrupts
are distributed in hardware (which only some machines do).
--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/
next parent reply other threads:[~2007-02-23 14:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.o8VX4Uax4/73QDX3vvhLW5NBvRE@ifi.uio.no>
2007-02-23 14:39 ` Robert Hancock [this message]
2007-02-23 11:32 irq balancing question Imre Gergely
2007-02-23 14:45 ` Arjan van de Ven
2007-02-23 14:58 ` Gergely Imre
2007-02-23 15:54 ` Arjan van de Ven
2007-02-23 18:51 ` Gergely Imre
2007-02-23 19:01 ` Arjan van de Ven
2007-02-23 20:57 ` Gergely Imre
-- strict thread matches above, loose matches on Subject: below --
2005-12-15 14:00 Pallipadi, Venkatesh
2005-11-17 8:28 ` JaniD++
2005-12-15 0:48 Pallipadi, Venkatesh
2005-12-15 9:10 ` JaniD++
2005-12-14 21:05 JaniD++
2005-12-14 21:16 ` Arjan van de Ven
2005-12-14 21:31 ` JaniD++
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=45DEFC91.2050908@shaw.ca \
--to=hancockr@shaw.ca \
--cc=imre.gergely@astral.ro \
--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