From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 14 Jul 2005 17:13:08 +0100 (BST) Received: from smtp-out.hotpop.com ([IPv6:::ffff:38.113.3.61]:6542 "EHLO smtp-out.hotpop.com") by linux-mips.org with ESMTP id convert rfc822-to-8bit; Thu, 14 Jul 2005 17:12:48 +0100 Received: from hotpop.com (kubrick.hotpop.com [38.113.3.103]) by smtp-out.hotpop.com (Postfix) with SMTP id 7704B14090C8 for ; Thu, 14 Jul 2005 16:13:47 +0000 (UTC) Received: from cavan (unknown [62.253.252.7]) by smtp-1.hotpop.com (Postfix) with ESMTP id 0EAB51A0237 for ; Thu, 14 Jul 2005 15:15:43 +0000 (UTC) Date: Thu, 14 Jul 2005 15:15:42 +0000 From: jaypee@hotpop.com Subject: Re: Au1550 ethernet throughput low To: linux-mips References: <1121270402l.7656l.3l@cavan> <1121353347.10582.3.camel@orionlinux.starfleet.com> In-Reply-To: <1121353347.10582.3.camel@orionlinux.starfleet.com> (from matej.kupljen@ultra.si on Thu Jul 14 16:02:26 2005) X-Mailer: Balsa 2.3.3 Message-Id: <1121354144l.5178l.2l@cavan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; DelSp=Yes; Format=Flowed Content-Disposition: inline Content-Transfer-Encoding: 8BIT X-HotPOP: ----------------------------------------------- Sent By HotPOP.com FREE Email Get your FREE POP email at www.HotPOP.com ----------------------------------------------- Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 8492 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: jaypee@hotpop.com Precedence: bulk X-list: linux-mips -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > I've got a au1550 board based largely on the pb1550. The ethernet > throughput is ~66Mbps using the 2.6 kernel. This also consumes a > lot of cpu cycles to send. I put a test into YAMON and I can get full line rate out no problem. I think this narrows it down to a problem with the kernel or my port of it. The actual au1000_eth driver doesn't do much work other than copy a packet into cache aligned buffer. It must be more to do with the scheduling of sending a new packet. tx_ack. The kernel I'm using is a snapshot linux-mips CVS of 2.6.11-rc5. Can anyone tell me if there improvements/fixes to this area since then? Clem sent me the output of a test. In which he is getting 11MBs I'm assuming the B is bytes in which case that is as near line rate as dammit. Clem you said were using 2.6.11 was that a kernel.org kernel or one from linux-mips.org? thnks for running the test clem. - -- JP mailto:jaypee@hotpop.com http://www.jaypee.org.uk -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFC1oGgZDxnKy3oOpYRAvw4AJ4kkGrJ/DneIqfkXYfyrKqJ5k2u1wCgo0oQ 0BYyAl8y5rBzgh1dBczJKpY= =icdF -----END PGP SIGNATURE-----