From owner-freebsd-arm@FreeBSD.ORG Tue Feb 19 09:01:34 2013 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id D5463C7A for ; Tue, 19 Feb 2013 09:01:34 +0000 (UTC) (envelope-from steve@sohara.org) Received: from uk1rly2283.eechost.net (relay01a.mail.uk1.eechost.net [217.69.40.75]) by mx1.freebsd.org (Postfix) with ESMTP id 9573E898 for ; Tue, 19 Feb 2013 09:01:33 +0000 (UTC) Received: from [31.186.37.179] (helo=smtp.marelmo.com) by uk1rly2283.eechost.net with esmtpa (Exim 4.72) (envelope-from ) id 1U7j4y-0002oH-Vh; Tue, 19 Feb 2013 09:01:37 +0000 Received: from [192.168.63.1] (helo=steve.marelmo.com) by smtp.marelmo.com with smtp (Exim 4.80.1 (FreeBSD)) (envelope-from ) id 1U7j4i-000LRp-DP; Tue, 19 Feb 2013 09:01:20 +0000 Date: Tue, 19 Feb 2013 09:00:49 +0000 From: Steve O'Hara-Smith To: Brett Wynkoop Subject: Re: Network Notes Message-Id: <20130219090049.40cb855b2b7c855971f04a4a@sohara.org> In-Reply-To: <20130219034649.5fb69bce@ivory.wynn.com> References: <20130219034649.5fb69bce@ivory.wynn.com> X-Mailer: Sylpheed 3.3.0 (GTK+ 2.24.6; amd64-portbld-freebsd9.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Auth-Info: 15567@permanet.ie (plain) Cc: freebsd-arm@freebsd.org X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Feb 2013 09:01:34 -0000 On Tue, 19 Feb 2013 03:46:49 -0500 Brett Wynkoop wrote: > Greeting- > > Just discovered a difference in network performance between the Pi and > the Bone. > > wynkoop@beaglebone:~ % ping prd7 > PING prd7.wynn.com (199.89.147.7): 56 data bytes > 64 bytes from 199.89.147.7: icmp_seq=0 ttl=64 time=2.170 ms > 64 bytes from 199.89.147.7: icmp_seq=1 ttl=64 time=1.131 ms > 64 bytes from 199.89.147.7: icmp_seq=2 ttl=64 time=0.977 ms > 64 bytes from 199.89.147.7: icmp_seq=3 ttl=64 time=1.052 ms > 64 bytes from 199.89.147.7: icmp_seq=4 ttl=64 time=1.217 ms > ^C > --- prd7.wynn.com ping statistics --- > 5 packets transmitted, 5 packets received, 0.0% packet loss > round-trip min/avg/max/stddev = 0.977/1.309/2.170/0.438 ms > wynkoop@beaglebone:~ % > root@fbsd-pi:~ # ping prd7 > PING prd7.wynn.com (199.89.147.7): 56 data bytes > 64 bytes from 199.89.147.7: icmp_seq=0 ttl=64 time=8.560 ms > 64 bytes from 199.89.147.7: icmp_seq=1 ttl=64 time=10.222 ms This is an artefact of the FreeBSD drivers for the pi - Linux on the pi gets sub millisecond ping times on my network while FreeBSD gets the same 10ms you've been seeing. I've been assuming that it has to do with not using DMA yet. -- Steve O'Hara-Smith