From owner-freebsd-net Wed Apr 17 21:36:58 2002 Delivered-To: freebsd-net@freebsd.org Received: from patrocles.silby.com (d84.as9.nwbl0.wi.voyager.net [169.207.132.212]) by hub.freebsd.org (Postfix) with ESMTP id D822837B416 for ; Wed, 17 Apr 2002 21:36:54 -0700 (PDT) Received: from patrocles.silby.com (localhost [127.0.0.1]) by patrocles.silby.com (8.12.2/8.12.2) with ESMTP id g3IAakLx018797; Thu, 18 Apr 2002 05:36:46 -0500 (CDT) (envelope-from silby@silby.com) Received: from localhost (silby@localhost) by patrocles.silby.com (8.12.2/8.12.2/Submit) with ESMTP id g3IAaibu018794; Thu, 18 Apr 2002 05:36:45 -0500 (CDT) X-Authentication-Warning: patrocles.silby.com: silby owned process doing -bs Date: Thu, 18 Apr 2002 05:36:44 -0500 (CDT) From: Mike Silbersack To: Mark Delany Cc: Bill Fenner , Subject: Re: What does FreeBSD do when listen queue is full ? In-Reply-To: <20020418011320.60326.qmail@prefix.bushwire.net> Message-ID: <20020418053441.L17827-100000@patrocles.silby.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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 18 Apr 2002, Mark Delany wrote: > It raises the question as to the purpose of backlog. Is it really only > intended as a resource hint or does it represent a firm threshold > beyond which the OS should act differently? > > If the latter, then the purpose of the threshold can only be of real > benefit to the client as the server can trivially track its own > resource usage, true? Well, the problem with being fast and free with RSTs is that I don't think many clients react well to them. Hence, in the standalone server case I suspect that Bill's idea of ignoring the ACK and waiting for it to be retransmitted is the better idea. After that is done, adding a sysctl which enables the RST functionality wouldn't be a problem if you think that it may be beneficial for those using load balancers. Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message