From owner-freebsd-net Fri Sep 21 3: 3:18 2001 Delivered-To: freebsd-net@freebsd.org Received: from opensrs.saignon.net (216-120-17-31.dsl.cust.tfb.com [216.120.17.31]) by hub.freebsd.org (Postfix) with ESMTP id 4C34F37B421 for ; Fri, 21 Sep 2001 03:03:11 -0700 (PDT) Received: from tsaignmobl (216-120-17-24.dsl.cust.tfb.com [216.120.17.24]) by opensrs.saignon.net (8.11.4/8.11.3) with SMTP id f8L8rCP72480; Fri, 21 Sep 2001 01:53:16 -0700 (PDT) (envelope-from tony@saign.com) From: Tony Saign Reply-To: To: "'Tsuchiya Yoshihiro'" , "'Mike Silbersack'" Cc: Subject: RE: TCP performance question Date: Fri, 21 Sep 2001 01:52:50 -0700 Message-ID: <000301c1427a$cbdee3b0$3e01a8c0@tsaignmobl> X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2911.0) In-Reply-To: <3BAAFA13.8040708@flab.fujitsu.co.jp> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Importance: Normal Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Just tried it on a 4.4-RELEASE box and it appears to work :) * -----Original Message----- * From: owner-freebsd-net@FreeBSD.ORG * [mailto:owner-freebsd-net@FreeBSD.ORG]On Behalf Of Tsuchiya Yoshihiro * Sent: Friday, September 21, 2001 1:28 AM * To: Mike Silbersack * Cc: net@FreeBSD.ORG * Subject: Re: TCP performance question * * * Mike Silbersack wrote: * * >On Fri, 21 Sep 2001 tsuchiya@flab.fujitsu.co.jp wrote: * > * >>and we changed the size from 1 to 10000 byte and measured * the time of * >>read/write pair on the server. Usually the measured time is * >>around or less than 1 msec, however it is always 100msec * when the size is * >>between 2049 and 2919 byte or between 4381 and 5839 byte or * >>between 7301 and 8751 byte. 100 times slower. * >> * > * >Try disabling delayed ACKs and see how that affects your * results. The * >default delay for delayed acks is 100ms. * > * >sysctl -w net.inet.tcp.delayed_ack=0 * > * * I found a machine with FreeBSD4.3 and tried it, but it didn't work. * * Yoshi * * * * * * To Unsubscribe: send mail to majordomo@FreeBSD.org * with "unsubscribe freebsd-net" in the body of the message * To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message