From: jamal <hadi@cyberus.ca>
To: David Miller <davem@davemloft.net>
Cc: yi.zhu@intel.com, kaber@trash.net,
peter.p.waskiewicz.jr@intel.com, netdev@vger.kernel.org,
jeff@garzik.org, auke-jan.h.kok@intel.com
Subject: Re: [PATCH] NET: Multiqueue network device support.
Date: Wed, 27 Jun 2007 20:15:47 -0400 [thread overview]
Message-ID: <1182989747.5155.89.camel@localhost> (raw)
In-Reply-To: <20070627.155457.35508432.davem@davemloft.net>
On Wed, 2007-27-06 at 15:54 -0700, David Miller wrote:
> The thing that's really important is that the value is not so
> large such that the TX ring can become empty.
In the case of batching, varying the values makes a difference.
The logic is that if you can tune it so that the driver takes
"sufficiently long" to stay closed the more packets you accumulate at
the qdisc and the more you can batch to the driver (when it opens up).
Deciding what "sufficiently long" is an art - and i am sure speed
dependent. With e1000 at gige 128 seems to be a good value, going above
or below that gave lesser performance.
cheers,
jamal
next prev parent reply other threads:[~2007-06-28 0:15 UTC|newest]
Thread overview: 153+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-04 21:40 [RFC] NET: Multiple queue hardware support PJ Waskiewicz
2007-06-04 21:40 ` [PATCH] NET: Multiqueue network device support PJ Waskiewicz
2007-06-05 11:50 ` jamal
2007-06-05 15:51 ` Waskiewicz Jr, Peter P
2007-06-05 22:28 ` jamal
2007-06-06 15:11 ` Patrick McHardy
2007-06-06 22:13 ` jamal
2007-06-06 22:30 ` Waskiewicz Jr, Peter P
2007-06-06 22:40 ` David Miller
2007-06-06 23:35 ` jamal
2007-06-06 23:56 ` David Miller
2007-06-07 16:08 ` Stephen Hemminger
2007-06-07 16:59 ` Waskiewicz Jr, Peter P
2007-06-11 12:08 ` Patrick McHardy
2007-06-07 22:04 ` jamal
2007-06-09 14:58 ` Leonid Grossman
2007-06-09 19:23 ` jamal
2007-06-09 21:23 ` Leonid Grossman
2007-06-09 22:14 ` Jeff Garzik
2007-06-10 3:02 ` jamal
2007-06-10 15:27 ` Leonid Grossman
2007-06-06 22:35 ` David Miller
2007-06-06 22:57 ` Waskiewicz Jr, Peter P
2007-06-06 23:00 ` David Miller
2007-06-06 23:14 ` Waskiewicz Jr, Peter P
2007-06-06 23:36 ` Jeff Garzik
2007-06-06 23:32 ` jamal
2007-06-06 23:48 ` Rick Jones
2007-06-06 23:54 ` jamal
2007-06-07 0:01 ` David Miller
2007-06-06 23:58 ` David Miller
2007-06-06 23:52 ` David Miller
2007-06-07 0:47 ` Jeff Garzik
2007-06-07 12:29 ` jamal
2007-06-07 15:03 ` Kok, Auke
2007-06-07 21:57 ` jamal
2007-06-07 22:06 ` Kok, Auke
2007-06-07 22:26 ` jamal
2007-06-07 22:30 ` Kok, Auke
2007-06-07 22:57 ` jamal
2007-06-07 22:44 ` David Miller
2007-06-07 22:54 ` jamal
2007-06-07 23:00 ` David Miller
2007-06-07 23:03 ` jamal
2007-06-08 0:31 ` Sridhar Samudrala
2007-06-08 1:35 ` jamal
2007-06-08 10:39 ` Herbert Xu
2007-06-08 11:34 ` jamal
2007-06-08 12:37 ` Herbert Xu
2007-06-08 13:12 ` jamal
2007-06-09 11:08 ` Herbert Xu
2007-06-09 14:36 ` jamal
2007-06-08 5:32 ` Krishna Kumar2
2007-06-08 19:55 ` Waskiewicz Jr, Peter P
2007-06-09 0:24 ` jamal
2007-06-07 22:55 ` Waskiewicz Jr, Peter P
2007-06-09 1:05 ` Ramkrishna Vepa
2007-06-06 23:53 ` David Miller
2007-06-07 1:08 ` jamal
2007-06-07 12:22 ` jamal
2007-06-11 12:01 ` Patrick McHardy
2007-06-11 11:58 ` Patrick McHardy
2007-06-11 12:23 ` jamal
2007-06-11 12:39 ` Patrick McHardy
2007-06-11 12:52 ` jamal
2007-06-11 13:03 ` Patrick McHardy
2007-06-11 13:29 ` jamal
2007-06-11 14:03 ` Patrick McHardy
2007-06-11 14:30 ` Cohen, Guy
2007-06-11 14:38 ` Patrick McHardy
2007-06-11 14:48 ` jamal
2007-06-11 15:00 ` Tomas Winkler
2007-06-11 15:14 ` jamal
2007-06-11 15:34 ` Cohen, Guy
2007-06-11 22:22 ` jamal
2007-06-12 14:04 ` Cohen, Guy
2007-06-12 15:23 ` jamal
2007-06-12 23:38 ` jamal
2007-06-11 14:40 ` jamal
2007-06-11 14:49 ` Patrick McHardy
2007-06-11 15:05 ` jamal
2007-06-11 15:12 ` Patrick McHardy
2007-06-11 15:25 ` jamal
2007-06-11 15:44 ` Patrick McHardy
2007-06-11 21:35 ` jamal
2007-06-11 23:01 ` Patrick McHardy
2007-06-12 0:58 ` Patrick McHardy
2007-06-12 2:29 ` jamal
2007-06-12 13:21 ` Patrick McHardy
2007-06-12 15:12 ` jamal
2007-06-12 21:02 ` David Miller
2007-06-12 21:13 ` Jeff Garzik
2007-06-12 21:17 ` Ben Greear
2007-06-12 21:26 ` David Miller
2007-06-12 21:46 ` Jeff Garzik
2007-06-12 21:52 ` Roland Dreier
2007-06-12 21:59 ` Jeff Garzik
2007-06-12 22:04 ` David Miller
2007-06-12 22:18 ` Jeff Garzik
2007-06-12 22:00 ` David Miller
2007-06-12 21:53 ` David Miller
2007-06-12 22:01 ` Jeff Garzik
2007-06-12 21:46 ` Ben Greear
2007-06-12 21:54 ` David Miller
2007-06-12 22:30 ` Jeff Garzik
2007-06-12 22:40 ` Ben Greear
2007-06-12 21:47 ` Jason Lunz
2007-06-12 21:55 ` David Miller
2007-06-12 22:17 ` Jason Lunz
2007-06-13 3:41 ` Leonid Grossman
2007-06-13 16:44 ` Rick Jones
2007-06-12 21:17 ` Patrick McHardy
2007-06-13 5:56 ` Zhu Yi
2007-06-13 11:34 ` Patrick McHardy
2007-06-14 1:51 ` Zhu Yi
2007-06-13 12:32 ` jamal
2007-06-13 13:12 ` Robert Olsson
2007-06-13 13:33 ` jamal
2007-06-13 15:01 ` Leonid Grossman
2007-06-13 15:53 ` Robert Olsson
2007-06-13 18:20 ` David Miller
2007-06-13 18:22 ` Waskiewicz Jr, Peter P
2007-06-13 21:30 ` jamal
2007-06-14 2:44 ` Zhu Yi
2007-06-14 11:48 ` jamal
2007-06-15 1:27 ` Zhu Yi
2007-06-15 10:49 ` jamal
2007-06-18 1:18 ` Zhu Yi
2007-06-18 15:16 ` jamal
2007-06-19 2:12 ` Zhu Yi
2007-06-19 16:04 ` jamal
2007-06-20 5:51 ` Zhu Yi
2007-06-21 15:39 ` jamal
2007-06-22 1:26 ` Zhu Yi
2007-06-25 16:47 ` jamal
2007-06-25 20:47 ` David Miller
2007-06-26 13:27 ` jamal
2007-06-26 20:57 ` David Miller
2007-06-27 22:32 ` jamal
2007-06-27 22:54 ` David Miller
2007-06-28 0:15 ` jamal [this message]
2007-06-28 0:31 ` David Miller
2007-06-12 9:19 ` Johannes Berg
2007-06-12 12:17 ` jamal
2007-06-11 17:36 ` Patrick McHardy
2007-06-11 18:05 ` Waskiewicz Jr, Peter P
2007-06-11 18:07 ` Patrick McHardy
2007-06-13 18:34 ` Waskiewicz Jr, Peter P
2007-06-11 17:52 ` Patrick McHardy
2007-06-11 17:57 ` Waskiewicz Jr, Peter P
2007-06-11 18:05 ` Patrick McHardy
2007-06-11 18:15 ` Waskiewicz Jr, Peter P
2007-06-11 18:24 ` Patrick McHardy
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