From owner-cvs-src@FreeBSD.ORG Tue Feb 24 09:22:36 2004 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6CFCF16A4CE for ; Tue, 24 Feb 2004 09:22:36 -0800 (PST) Received: from mailtoaster1.pipeline.ch (mailtoaster1.pipeline.ch [62.48.0.70]) by mx1.FreeBSD.org (Postfix) with ESMTP id 669A143D31 for ; Tue, 24 Feb 2004 09:22:35 -0800 (PST) (envelope-from oppermann@pipeline.ch) Received: (qmail 24517 invoked from network); 24 Feb 2004 17:22:34 -0000 Received: from unknown (HELO pipeline.ch) ([62.48.0.53]) (envelope-sender ) by mailtoaster1.pipeline.ch (qmail-ldap-1.03) with SMTP for ; 24 Feb 2004 17:22:34 -0000 Message-ID: <403B8853.45CBEE28@pipeline.ch> Date: Tue, 24 Feb 2004 18:22:27 +0100 From: Andre Oppermann X-Mailer: Mozilla 4.76 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Steve Kargl References: <200402241527.i1OFRgdm072232@repoman.freebsd.org> <403B6FBB.F1BD933C@freebsd.org> <403B7157.8030502@freebsd.org> <20040224171706.GA59202@troutmask.apl.washington.edu> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit cc: Andre Oppermann cc: src-committers@freebsd.org cc: Scott Long cc: cvs-all@freebsd.org cc: cvs-src@freebsd.org Subject: Re: cvs commit: src/sys/netinet tcp_input.c tcp_subr.c tcp_var.h X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Feb 2004 17:22:36 -0000 Steve Kargl wrote: > > On Tue, Feb 24, 2004 at 08:44:23AM -0700, Scott Long wrote: > > Andre Oppermann wrote: > > >Andre Oppermann wrote: > > > > > >>andre 2004/02/24 07:27:42 PST > > >> > > >> FreeBSD src repository > > >> > > >> Modified files: > > >> sys/netinet tcp_input.c tcp_subr.c tcp_var.h > > >> Log: > > >> Convert the tcp segment reassembly queue to UMA and limit the maximum > > >> amount of segments it will hold. > > >> > > >> The following tuneables and sysctls control the behaviour of the tcp > > >> segment reassembly queue: > > >> > > >> net.inet.tcp.reass.maxsegments (loader tuneable) > > >> specifies the maximum number of segments all tcp reassemly queues can > > >> hold (defaults to 1/16 of nmbclusters). > > >> > > >> net.inet.tcp.reass.maxqlen > > >> specifies the maximum number of segments any individual tcp session > > >> queue > > >> can hold (defaults to 48). > > >> > > >> net.inet.tcp.reass.cursegments (readonly) > > >> counts the number of segments currently in all reassembly queues. > > >> > > >> net.inet.tcp.reass.overflows (readonly) > > >> counts how often either the global or local queue limit has been > > >> reached. > > >> > > >> Tested by: bms, silby > > >> Reviewed by: bms, silby > > > > > > > > >This changes sizeof(struct tcpcb) and makes a recompile of libkvm and > > >related userland network utilities neccessary. > > > > > > > Please make this statement a little louder via a HEADS UP message, and > > add an entry to src/UPDATING. > > > > Does this require a _FreeBSD_version bump? In other words, will > it affect ports/{net,www,sysutils}? No, it doesn't. Only things like netstat are affected because they use the libkvm to access in-kernel structures. -- Andre