From owner-freebsd-performance@FreeBSD.ORG Sat Mar 18 12:27:28 2006 Return-Path: X-Original-To: freebsd-performance@freebsd.org Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 92A1216A400 for ; Sat, 18 Mar 2006 12:27:28 +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 C1B6F43D45 for ; Sat, 18 Mar 2006 12:27:27 +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 D868D119D2E; Sat, 18 Mar 2006 13:26:55 +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 52672-06; Sat, 18 Mar 2006 13:26:55 +0100 (CET) Received: from oxy (dsl217-197-187-71.pool.tvnet.hu [217.197.187.71]) by green.field.hu (Postfix) with ESMTP id 7AC80119CC4; Sat, 18 Mar 2006 13:26:55 +0100 (CET) Message-ID: <000601c64a87$51d7dee0$0201a8c0@oxy> From: "OxY" To: "Chuck Swiger" References: <000a01c64a81$45eb6850$0201a8c0@oxy> <441BF838.1080600@mac.com> Date: Sat, 18 Mar 2006 13:27:27 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-2"; 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 Cc: freebsd-performance@freebsd.org Subject: Re: packet drop with intel gigabit / marwell gigabit X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 18 Mar 2006 12:27:28 -0000 yeah, i googled these settings, but i put them back to default then! i measured iperf performance, and it showed that the packet drop is depending on the system load.. ----- Original Message ----- From: "Chuck Swiger" To: "OxY" Cc: Sent: Saturday, March 18, 2006 1:08 PM Subject: Re: packet drop with intel gigabit / marwell gigabit > OxY wrote: >> hi! >> >> i had the packet drop problem with the marwell yukon gigabitcard: >> (system is an amd 2000+xp, 512mb ram, fbsd 6.0-p5) > > Hi-- > > The changes you've made in tuning the sysctls are unreasonable on a > machine with > only 512 MB of RAM; in particular: > >> net.inet.tcp.inflight.max=10737254400 > > ...you don't have 10GB of space for TCP!?! Remove all of the tuning > you've done > and start over with the default values, and then adjust those gradually if > doing > so improves your situation. > >> when the apache ran, with no http, just used to share files and the >> traffic was >> 2-2,5MB/S i had 14-17% packet drop on the gigabit interface.. >> with the sysctl i succesfully pulled it down to 12-14%, but it was >> terrible, >> so i bought an intel pro/1000 gt. >> with this i have 3-6% drop with same traffic load on the other >> interface.. >> when i stop the apache packet drop falls down to 0-0.1%, which is great. >> but with apache it's terrible.. > > Um. What are you measuring? If you start or stop Apache, that should > make no > difference to ICMP ping testing, for example.... > > -- > -Chuck