From: Scott Feldman <sfeldma@pobox.com>
To: Robert Olsson <Robert.Olsson@data.slu.se>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>,
jamal <hadi@cyberus.ca>,
P@draigBrady.com, mellia@prezzemolo.polito.it,
e1000-devel@lists.sourceforge.net,
Jorge Manuel Finochietto <jorge.finochietto@polito.it>,
Giulio Galante <galante@polito.it>,
netdev@oss.sgi.com
Subject: Re: [E1000-devel] Transmission limit
Date: Wed, 01 Dec 2004 08:49:51 -0800 [thread overview]
Message-ID: <1101919791.5198.15.camel@localhost.localdomain> (raw)
In-Reply-To: <16813.58484.343629.570703@robur.slu.se>
On Wed, 2004-12-01 at 07:34, Robert Olsson wrote:
> Nice but I no improvements w. 82546GB @ 133 MHz on 1.6 GHz Opteron it seems.
> SMP kernel linux-2.6.9-rc2
>
> Vanilla.
> 801077pps 410Mb/sec (410151424bps) errors: 95596
>
> Patch TXD=4096
> 608690pps 311Mb/sec (311649280bps) errors: 0
Thank you Robert for trying it out.
Well those results are counter-intuitive! We remove Tx interrupts and
Tx descriptor DMA write-backs and get no re-tries, and performance
drops? The only bus activities left are the DMA of buffers to device
and the register writes to increment tail. I'm stumped. I'll need to
get my hands on a faster system. Maybe there is a bus analyzer under
the tree. :-)
-scott
next prev parent reply other threads:[~2004-12-01 16:49 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1101467291.24742.70.camel@mellia.lipar.polito.it>
2004-11-26 14:05 ` [E1000-devel] Transmission limit P
2004-11-26 15:31 ` Marco Mellia
2004-11-26 19:56 ` jamal
2004-11-29 14:21 ` Marco Mellia
2004-11-30 13:46 ` jamal
2004-12-02 17:24 ` Marco Mellia
2004-11-26 20:06 ` jamal
2004-11-26 20:56 ` Lennert Buytenhek
2004-11-26 21:02 ` Lennert Buytenhek
2004-11-27 9:25 ` Harald Welte
[not found] ` <20041127111101.GC23139@xi.wantstofly.org>
2004-11-27 11:31 ` Harald Welte
2004-11-27 20:12 ` Cesar Marcondes
2004-11-29 8:53 ` Marco Mellia
2004-11-29 14:50 ` Lennert Buytenhek
2004-11-30 8:42 ` Marco Mellia
2004-12-01 12:25 ` jamal
2004-12-02 13:39 ` Marco Mellia
2004-12-03 13:07 ` jamal
2004-11-26 15:40 ` Robert Olsson
2004-11-26 15:59 ` Marco Mellia
2004-11-26 16:57 ` P
2004-11-26 20:01 ` jamal
2004-11-29 10:19 ` P
2004-11-29 13:09 ` Robert Olsson
2004-11-29 20:16 ` David S. Miller
2004-12-01 16:47 ` Robert Olsson
2004-11-30 13:31 ` jamal
2004-11-30 13:46 ` Lennert Buytenhek
2004-11-30 14:25 ` jamal
2004-12-01 0:11 ` Lennert Buytenhek
2004-12-01 1:09 ` Scott Feldman
2004-12-01 15:34 ` Robert Olsson
2004-12-01 16:49 ` Scott Feldman [this message]
2004-12-01 17:37 ` Robert Olsson
2004-12-02 17:54 ` Robert Olsson
2004-12-02 18:23 ` Robert Olsson
2004-12-02 23:25 ` Lennert Buytenhek
2004-12-03 5:23 ` Scott Feldman
2004-12-10 16:24 ` Martin Josefsson
2004-12-01 18:29 ` Lennert Buytenhek
2004-12-01 21:35 ` Lennert Buytenhek
2004-12-02 6:13 ` Scott Feldman
2004-12-03 13:24 ` jamal
2004-12-05 14:50 ` 1.03Mpps on e1000 (was: Re: [E1000-devel] Transmission limit) Lennert Buytenhek
2004-12-05 15:03 ` Martin Josefsson
2004-12-05 15:15 ` Lennert Buytenhek
2004-12-05 15:19 ` Martin Josefsson
2004-12-05 15:30 ` Martin Josefsson
2004-12-05 17:00 ` Lennert Buytenhek
2004-12-05 17:11 ` Martin Josefsson
2004-12-05 17:38 ` Martin Josefsson
2004-12-05 18:14 ` Lennert Buytenhek
2004-12-05 15:42 ` Martin Josefsson
2004-12-05 16:48 ` Martin Josefsson
2004-12-05 17:01 ` Martin Josefsson
2004-12-05 17:58 ` Lennert Buytenhek
2004-12-05 17:44 ` Lennert Buytenhek
2004-12-05 17:51 ` Lennert Buytenhek
2004-12-05 17:54 ` Martin Josefsson
2004-12-06 11:32 ` 1.03Mpps on e1000 (was: " jamal
2004-12-06 12:11 ` Lennert Buytenhek
2004-12-06 12:20 ` jamal
2004-12-06 12:23 ` Lennert Buytenhek
2004-12-06 12:30 ` Martin Josefsson
2004-12-06 13:11 ` jamal
[not found] ` <20041206132907.GA13411@xi.wantstofly.org>
[not found] ` <16820.37049.396306.295878@robur.slu.se>
2004-12-06 17:32 ` 1.03Mpps on e1000 (was: Re: [E1000-devel] " P
2004-12-08 23:36 ` Ray Lehtiniemi
[not found] ` <41B825A5.2000009@draigBrady.com>
[not found] ` <20041209161825.GA32454@mail.com>
2004-12-09 17:12 ` 1.03Mpps on e1000 P
[not found] ` <20041209164820.GB32454@mail.com>
2004-12-09 17:19 ` P
2004-12-09 23:25 ` Ray Lehtiniemi
2004-12-05 21:12 ` 1.03Mpps on e1000 (was: Re: [E1000-devel] Transmission limit) Scott Feldman
2004-12-05 21:25 ` Lennert Buytenhek
2004-12-06 1:23 ` 1.03Mpps on e1000 (was: " Scott Feldman
2004-12-02 17:31 ` [E1000-devel] Transmission limit Marco Mellia
2004-12-03 20:57 ` Lennert Buytenhek
2004-12-04 10:36 ` Lennert Buytenhek
2004-12-01 12:08 ` jamal
2004-12-01 15:24 ` Lennert Buytenhek
2004-11-26 17:58 ` Robert Olsson
2004-11-27 20:00 ` Lennert Buytenhek
2004-11-29 12:44 ` Marco Mellia
2004-11-29 15:19 ` Lennert Buytenhek
2004-11-29 17:32 ` Marco Mellia
2004-11-29 19:08 ` Lennert Buytenhek
2004-11-29 19:09 ` Lennert Buytenhek
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