From: jamal <hadi@cyberus.ca>
To: Mitch Williams <mitch.a.williams@intel.com>
Cc: netdev@oss.sgi.com, john.ronciak@intel.com,
ganesh.venkatesan@intel.com, jesse.brandeburg@intel.com
Subject: Re: RFC: NAPI packet weighting patch
Date: Fri, 27 May 2005 07:18:52 -0400 [thread overview]
Message-ID: <1117192732.6688.8.camel@localhost.localdomain> (raw)
In-Reply-To: <Pine.CYG.4.58.0505261406210.2364@mawilli1-desk2.amr.corp.intel.com>
On Thu, 2005-26-05 at 14:36 -0700, Mitch Williams wrote:
> The following patch (which applies to 2.6.12rc4) adds a new sysctl
> parameter called 'netdev_packet_weight'. This parameter controls how many
> backlog work units each RX packet is worth.
>
> With the parameter set to 0 (the default), NAPI polling works exactly as
> it does today: each packet is worth one backlog work unit, and the
> maximum number of received packets that will be processed in any given
> softirq is controlled by the 'netdev_max_backlog' parameter.
>
NAPI uses already using a Weighted Round robin scheduling scheme know as
DRR.
I am not sure providing a weight scale on the weight is enhancing
anything.
Did you try to just reduce the weight instead to make it smaller
instead? i.e take the resultant weight of you using a shift and set that
as the weight.
cheers,
jamal
next prev parent reply other threads:[~2005-05-27 11:18 UTC|newest]
Thread overview: 124+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-26 21:36 RFC: NAPI packet weighting patch Mitch Williams
2005-05-27 8:21 ` Robert Olsson
2005-05-27 11:18 ` jamal [this message]
2005-05-27 15:50 ` Stephen Hemminger
2005-05-27 20:27 ` Mitch Williams
2005-05-27 21:01 ` Stephen Hemminger
2005-05-28 0:56 ` jamal
2005-05-31 17:35 ` Mitch Williams
2005-05-31 17:40 ` Stephen Hemminger
2005-05-31 17:43 ` Mitch Williams
2005-05-31 22:07 ` Jon Mason
2005-05-31 22:14 ` David S. Miller
2005-05-31 23:28 ` Jon Mason
2005-06-02 12:26 ` jamal
2005-06-02 17:30 ` Stephen Hemminger
2005-06-02 18:14 ` [PATCH] net: allow controlling NAPI weight with sysfs Stephen Hemminger
2005-06-08 21:24 ` David S. Miller
2005-06-02 18:19 ` [PATCH] net: fix sysctl_ Stephen Hemminger
-- strict thread matches above, loose matches on Subject: below --
2005-06-02 21:19 RFC: NAPI packet weighting patch Ronciak, John
2005-06-02 21:31 ` Stephen Hemminger
2005-06-02 21:40 ` David S. Miller
2005-06-02 21:51 ` Jon Mason
2005-06-02 22:12 ` David S. Miller
2005-06-02 22:19 ` Jon Mason
2005-06-02 22:15 ` Robert Olsson
2005-06-03 0:11 Ronciak, John
2005-06-03 0:18 ` David S. Miller
2005-06-03 2:32 ` jamal
2005-06-03 17:43 ` Mitch Williams
2005-06-03 18:38 ` David S. Miller
2005-06-03 18:42 ` jamal
2005-06-03 19:01 ` David S. Miller
2005-06-03 19:28 ` Mitch Williams
2005-06-03 19:59 ` jamal
2005-06-03 20:31 ` David S. Miller
2005-06-03 21:12 ` Jon Mason
2005-06-03 20:22 ` David S. Miller
2005-06-03 20:29 ` David S. Miller
2005-06-03 19:49 ` Michael Chan
2005-06-03 20:59 ` Lennert Buytenhek
2005-06-03 20:35 ` Michael Chan
2005-06-03 22:29 ` jamal
2005-06-04 0:25 ` Michael Chan
2005-06-05 21:36 ` David S. Miller
2005-06-06 6:43 ` David S. Miller
2005-06-03 23:26 ` Lennert Buytenhek
2005-06-05 20:11 ` David S. Miller
2005-06-03 21:07 ` Edgar E Iglesias
2005-06-03 23:30 ` Lennert Buytenhek
2005-06-03 20:30 ` Ben Greear
2005-06-03 19:40 ` jamal
2005-06-03 20:23 ` jamal
2005-06-03 20:28 ` Mitch Williams
2005-06-03 17:40 Ronciak, John
2005-06-03 18:08 ` Robert Olsson
2005-06-03 18:19 Ronciak, John
2005-06-03 18:33 ` Ben Greear
2005-06-03 18:49 ` David S. Miller
2005-06-03 18:59 ` Ben Greear
2005-06-03 19:02 ` David S. Miller
2005-06-03 20:17 ` Robert Olsson
2005-06-03 20:30 ` David S. Miller
2005-06-06 15:35 Ronciak, John
2005-06-06 19:47 ` David S. Miller
2005-06-06 20:29 Ronciak, John
2005-06-06 23:55 ` Mitch Williams
2005-06-07 0:08 ` Ben Greear
2005-06-08 1:50 ` Jesse Brandeburg
2005-06-07 4:53 ` Stephen Hemminger
2005-06-07 12:38 ` jamal
2005-06-07 12:06 ` Martin Josefsson
2005-06-07 13:29 ` jamal
2005-06-07 12:36 ` Martin Josefsson
2005-06-07 16:34 ` Robert Olsson
2005-06-07 23:19 ` Rick Jones
2005-06-21 20:37 ` David S. Miller
2005-06-22 7:27 ` Eric Dumazet
2005-06-22 8:42 ` P
2005-06-22 19:37 ` jamal
2005-06-23 8:56 ` P
2005-06-21 20:20 ` David S. Miller
2005-06-21 20:38 ` Rick Jones
2005-06-21 20:55 ` David S. Miller
2005-06-21 21:47 ` Andi Kleen
2005-06-21 22:22 ` Donald Becker
2005-06-21 22:34 ` Andi Kleen
2005-06-22 0:08 ` Donald Becker
2005-06-22 4:44 ` Chris Friesen
2005-06-22 11:31 ` Andi Kleen
2005-06-22 16:23 ` Leonid Grossman
2005-06-22 16:37 ` jamal
2005-06-22 18:00 ` Leonid Grossman
2005-06-22 18:06 ` Andi Kleen
2005-06-22 20:22 ` David S. Miller
2005-06-22 20:35 ` Rick Jones
2005-06-22 20:43 ` David S. Miller
2005-06-22 21:10 ` Andi Kleen
2005-06-22 21:16 ` David S. Miller
2005-06-22 21:53 ` Chris Friesen
2005-06-22 22:11 ` Andi Kleen
2005-06-22 21:38 ` Eric Dumazet
2005-06-22 22:13 ` Eric Dumazet
2005-06-22 22:30 ` David S. Miller
2005-06-22 22:23 ` David S. Miller
2005-06-23 12:14 ` jamal
2005-06-23 17:36 ` David Mosberger
2005-06-22 22:42 ` Leonid Grossman
2005-06-22 23:13 ` Andi Kleen
2005-06-22 23:19 ` David S. Miller
2005-06-22 23:23 ` Andi Kleen
2005-06-22 17:05 ` Andi Kleen
2005-06-07 16:23 Ronciak, John
2005-06-07 20:21 ` David S. Miller
2005-06-08 2:20 ` Jesse Brandeburg
2005-06-08 3:31 ` David S. Miller
2005-06-08 3:43 ` David S. Miller
2005-06-08 13:36 ` jamal
2005-06-09 21:37 ` Jesse Brandeburg
2005-06-09 22:05 ` Stephen Hemminger
2005-06-09 22:12 ` Jesse Brandeburg
2005-06-09 22:21 ` David S. Miller
2005-06-09 22:21 ` jamal
2005-06-09 22:22 ` David S. Miller
2005-06-09 22:20 ` jamal
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