From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id 59841B7104 for ; Wed, 1 Jul 2009 22:37:41 +1000 (EST) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by ozlabs.org (Postfix) with ESMTP id E3051DDD04 for ; Wed, 1 Jul 2009 22:37:40 +1000 (EST) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1MLz4B-0002mY-CC for linuxppc-dev@ozlabs.org; Wed, 01 Jul 2009 12:37:36 +0000 Received: from p4ff07fa4.dip.t-dialin.net ([79.240.127.164]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 01 Jul 2009 12:37:35 +0000 Received: from dzu by p4ff07fa4.dip.t-dialin.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 01 Jul 2009 12:37:35 +0000 To: linuxppc-dev@ozlabs.org From: Detlev Zundel Subject: Re: ppc405ex + gigabit ethernet Date: Wed, 01 Jul 2009 14:37:24 +0200 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: news List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Lada, > Hi, > > I benchmarked performance of my network, which contains ppc405EX (Kilauea > board, kernel 2.6.30 from Denx) connected with a linux desktop via gigabit > ethernet. I used the netperf tool: > > netperf -t UDP_STREAM -H 192.168.1.1 -- -m 32768 > > So I was sending UDP packets to the desktop. The resulting speed was about 370 > Kb/s. I tried to send the packets to several different computers - with the > same result. So the ppc board is the bottleneck in this case. > > Is there any possibility to improve the gigabit capabilities of the ppc405EX? > Is there anyone who achieved a better performance with ppc4xx boards? On our kilauea in the lab: -bash-3.2# src/netperf -t UDP_STREAM -p 7776 -H 192.168.1.1 -fK -- -m 32768 UDP UNIDIRECTIONAL SEND TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.1.1 (192.168.1.1) port 0 AF_INET Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # KBytes/sec 106496 32768 10.00 3601 0 11519.64 124928 10.00 3601 11519.64 -bash-3.2# grep cpu /proc/cpuinfo cpu : 405EX -bash-3.2# cat /proc/version Linux version 2.6.29.4 (dzu@pollux.denx.de) (gcc version 4.2.2) #9 Wed Jun 17 11:18:46 CEST 2009 -bash-3.2# I can send you the kernel+dtb that I used for testing offlist. Cheers Detlev -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu@denx.de