From owner-freebsd-hackers Wed Jul 14 15:56: 8 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from dingo.cdrom.com (dingo.cdrom.com [204.216.28.145]) by hub.freebsd.org (Postfix) with ESMTP id 94959154B7 for ; Wed, 14 Jul 1999 15:56:05 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (localhost.cdrom.com [127.0.0.1]) by dingo.cdrom.com (8.9.3/8.8.8) with ESMTP id PAA02200; Wed, 14 Jul 1999 15:51:14 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Message-Id: <199907142251.PAA02200@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Jonathan Lemon Cc: hackers@freebsd.org Subject: Re: tcp windowsize query? In-reply-to: Your message of "Wed, 14 Jul 1999 16:12:46 CDT." <199907142112.QAA10842@free.pcs> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 14 Jul 1999 15:51:14 -0700 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > In article you write: > >> delayed ack sounds interesting.... > > > >Turning that off disables TCP slow-start. It's a huge performance > >booster for things like SMB service, where you have lots of short-lived > >TCP connections on a local net. > > Mike probably already knows this, but just a general clarification: > > No, it does _not_ turn off slow-start. Normally a TCP implementation > will delay sending an ACK to the peer until the TCP fasttimer expires, > or certain other conditions are met. The goal here is to amortize an > ACK over several incoming data packets. Yeah, brain fart. Slow start != delayed ACK. Blah. -- \\ The mind's the standard \\ Mike Smith \\ of the man. \\ msmith@freebsd.org \\ -- Joseph Merrick \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message