From owner-freebsd-net Mon Sep 24 19:15:34 2001 Delivered-To: freebsd-net@freebsd.org Received: from fgwmail6.fujitsu.co.jp (fgwmail6.fujitsu.co.jp [192.51.44.36]) by hub.freebsd.org (Postfix) with ESMTP id AC66237B41F for ; Mon, 24 Sep 2001 19:15:29 -0700 (PDT) Received: from m4.gw.fujitsu.co.jp by fgwmail6.fujitsu.co.jp (8.9.3/3.7W-MX0108-Fujitsu Gateway) id LAA02630; Tue, 25 Sep 2001 11:15:24 +0900 (JST) (envelope-from tsuchiya@flab.fujitsu.co.jp) From: tsuchiya@flab.fujitsu.co.jp Received: from const.kawasaki.flab.fujitsu.co.jp by m4.gw.fujitsu.co.jp (8.9.3/3.7W-0108-Fujitsu Domain Master) id LAA00892; Tue, 25 Sep 2001 11:15:24 +0900 (JST) (envelope-from tsuchiya@flab.fujitsu.co.jp) Received: (from tsuchiya@localhost) by const.kawasaki.flab.fujitsu.co.jp (8.9.3+3.2W/3.5Wpl7) id LAA00788; Tue, 25 Sep 2001 11:15:26 +0900 Date: Tue, 25 Sep 2001 11:15:26 +0900 Message-Id: <200109250215.LAA00788@const.kawasaki.flab.fujitsu.co.jp> To: silby@silby.com, tsuchiya@flab.fujitsu.co.jp Subject: Re: TCP performance question Cc: net@FreeBSD.org 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 > On Fri, 21 Sep 2001, Tsuchiya Yoshihiro wrote: > > > Mike Silbersack wrote: > > > > >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 > > What didn't work? Were you unable to disable delayed acks, or did > disabling them have no effect? > Sorry, it seems it works between two FreeBSD machines. I tried to say that it had no effect between FreeBSD4.3 and Solaris, on my problem. That's what I did previously. I found discussion on "delayed ack problem"(January 24 and 25) in this mailing list. Though still do not understand why delayed_ack=0 does not work for FreeBSD and Solaris. Anyway I appreciate your helping me. Thank you, Yoshi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message