From owner-freebsd-net@FreeBSD.ORG Wed Mar 15 15:40:26 2006 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 08CBA16A422 for ; Wed, 15 Mar 2006 15:40:26 +0000 (UTC) (envelope-from oxy@field.hu) Received: from green.field.hu (green.field.hu [217.20.130.28]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7D79E43D49 for ; Wed, 15 Mar 2006 15:40:25 +0000 (GMT) (envelope-from oxy@field.hu) Received: from localhost (green.field.hu [217.20.130.28]) by green.field.hu (Postfix) with ESMTP id EEB6B119D4C for ; Wed, 15 Mar 2006 16:40:10 +0100 (CET) Received: from green.field.hu ([217.20.130.28]) by localhost (green.field.hu [217.20.130.28]) (amavisd-new, port 10024) with ESMTP id 25197-10 for ; Wed, 15 Mar 2006 16:40:10 +0100 (CET) Received: from oxy (dsl217-197-187-71.pool.tvnet.hu [217.197.187.71]) by green.field.hu (Postfix) with ESMTP id B5133119CC4 for ; Wed, 15 Mar 2006 16:40:10 +0100 (CET) Message-ID: <000f01c64846$c7148840$0201a8c0@oxy> From: "OxY" To: References: <001101c64754$cbbd65d0$0201a8c0@oxy> <20060315001806.GA52826@cdnetworks.co.kr> Date: Wed, 15 Mar 2006 16:40:24 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2670 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 X-Virus-Scanned: by Amavisd-new (Spamassassin+Razor2+Pyzor+DCC+Bayes db, Clamd Antivirus) at field.hu Subject: Re: problem with Marwell gigabit performance X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Mar 2006 15:40:26 -0000 with the modified sk(4) driver i got the following: sk0: flags=8843 mtu 1500 options=2b the performance didn't changed, packet drops as usual... when the system is 100% idle, packet drop is around 1%, when i got ~0.80 load on the other (fxp0) interface, packet drop is 8-11% may i change the card to intel or 3com, or what to do? ----- Original Message ----- From: "Pyun YongHyeon" To: "OxY" Cc: Sent: Wednesday, March 15, 2006 1:18 AM Subject: Re: problem with Marwell gigabit performance > On Tue, Mar 14, 2006 at 11:48:14AM +0100, OxY wrote: > > hi! > > > > i have a Marwell (SMC) gigabit ethernet card (sk0) and > > have serious problems with performance.. > > the machine is a pc, amd 2000+ xp, 512mb ram. > > > > tested with iperf (bidirectional test, udp transfer, not stream) > > and got 8-15% packet drop when the system was idle. > > > > There is a modified sk(4) driver at > http://people.freebsd.org/~yongari/sk/sk_test/if_sk.c > http://people.freebsd.org/~yongari/sk/sk_test/if_skreg.h > > Would you please give it try? > I can't sure but you would get better results as the new driver > uses one lock for standard MTU size and supports Tx TCP checksum > offload and Rx IP checksum offload. > I could push 32bit PCI NIC(DGE-530T) to the PCI bus limit on sparc64. > > > then tuned the sysctl with these settings: > > > > kern.ipc.maxsockbuf=81920000 > > kern.ipc.nmbclusters=5000000000 > > kern.ipc.somaxconn=8192 > > net.inet.tcp.inflight.enable=1 > > net.inet.raw.recvspace=4096 > > net.inet.tcp.recvspace=131072 > > kern.ipc.shmmax=409600000 > > > > with these i got around 3-7% packet drop, > > but it's very high compared to zero :) > > > > my question is where/what should i optimize to not > > have packet drop at all, or at least reduce it as much as > > possible. > > > > thanks for your help! > > > > Csaba Banhalmi, HU > -- > Regards, > Pyun YongHyeon