From owner-freebsd-performance@FreeBSD.ORG Thu Nov 10 12:48:14 2005 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 BF74A16A421 for ; Thu, 10 Nov 2005 12:48:14 +0000 (GMT) (envelope-from mikej@rogers.com) Received: from smtp103.rog.mail.re2.yahoo.com (smtp103.rog.mail.re2.yahoo.com [206.190.36.81]) by mx1.FreeBSD.org (Postfix) with SMTP id C74DB43D53 for ; Thu, 10 Nov 2005 12:48:13 +0000 (GMT) (envelope-from mikej@rogers.com) Received: (qmail 14489 invoked from network); 10 Nov 2005 12:48:13 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=rogers.com; h=Received:Message-ID:Date:From:User-Agent:MIME-Version:To:CC:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=2+vRHmP9yGsrPJ8QEHBbCcQjVKdHKVop8JsbgMrfz60VH3ucSgmvjYML8KdyCyfhQtFR+DV27TBJBi2FRt4Tz076YS+U8cj7nB/hHUc3iQvCg2J9pbmSuRACV8PLlW4NQ42jEOqG7I2CJ8O/OClhpH508Wc/83Hj8quU2HQPXpI= ; Received: from unknown (HELO ?172.16.0.199?) (mikej@rogers.com@70.31.50.81 with plain) by smtp103.rog.mail.re2.yahoo.com with SMTP; 10 Nov 2005 12:48:13 -0000 Message-ID: <4373418E.1080907@rogers.com> Date: Thu, 10 Nov 2005 07:48:14 -0500 From: Mike Jakubik User-Agent: Thunderbird 1.5 (Windows/20051025) MIME-Version: 1.0 To: Robert Watson References: <70e8236f0511050457s5ce6d8batf805fbc9edd91360@mail.gmail.com> <20051109060931.GD5188@obiwan.tataz.chchile.org> <70e8236f0511090517g29b3f887x1b97ef5dec04548@mail.gmail.com> <70e8236f0511090627p24c90400ke39bdb0da222a323@mail.gmail.com> <4372184C.10809@mebius.lv> <43727712.4020500@rogers.com> <20051110090429.J33260@fledge.watson.org> In-Reply-To: <20051110090429.J33260@fledge.watson.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-performance@freebsd.org, Arkadi Shishlov Subject: Re: Poor Samba throughput on 6.0 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: Thu, 10 Nov 2005 12:48:14 -0000 Robert Watson wrote: > There are a number of TCP related configuration frobs on FreeBSD. It > would be quite interesting to know how modifying each of the following > settings affects Samba performance: > > net.inet.tcp.delayed_ack > net.inet.tcp.sack.enable > net.inet.tcp.inflight.enable > > There has been recent evidence that the inflight bandwidth calculation > is having problems generating stable performance at high bandwidth and > low latency, so I might try that one first. I get about ~3MB/s extra, and a 16MB/s peak, with inflight disabled, when downloading from the FreeBSD server to WindowsXP. An improvement, but still not a desirable result. The other variables do not seem to make much of a difference.