From owner-cvs-src-old@FreeBSD.ORG Wed Aug 18 18:06:05 2010 Return-Path: Delivered-To: cvs-src-old@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8601010656C2 for ; Wed, 18 Aug 2010 18:06:03 +0000 (UTC) (envelope-from andre@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [IPv6:2001:4f8:fff6::29]) by mx1.freebsd.org (Postfix) with ESMTP id 7AA1A8FC14 for ; Wed, 18 Aug 2010 18:06:03 +0000 (UTC) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.14.4/8.14.4) with ESMTP id o7II63tW066861 for ; Wed, 18 Aug 2010 18:06:03 GMT (envelope-from andre@repoman.freebsd.org) Received: (from svn2cvs@localhost) by repoman.freebsd.org (8.14.4/8.14.4/Submit) id o7II63Hb066860 for cvs-src-old@freebsd.org; Wed, 18 Aug 2010 18:06:03 GMT (envelope-from andre@repoman.freebsd.org) Message-Id: <201008181806.o7II63Hb066860@repoman.freebsd.org> X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to andre@repoman.freebsd.org using -f From: Andre Oppermann Date: Wed, 18 Aug 2010 18:05:54 +0000 (UTC) To: cvs-src-old@freebsd.org X-FreeBSD-CVS-Branch: HEAD Subject: cvs commit: src/sys/netinet tcp_output.c tcp_var.h X-BeenThere: cvs-src-old@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: **OBSOLETE** CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Aug 2010 18:06:05 -0000 andre 2010-08-18 18:05:54 UTC FreeBSD src repository Modified files: sys/netinet tcp_output.c tcp_var.h Log: SVN rev 211464 on 2010-08-18 18:05:54Z by andre If a TCP connection has been idle for one retransmit timeout or more it must reset its congestion window back to the initial window. RFC3390 has increased the initial window from 1 segment to up to 4 segments. The initial window increase of RFC3390 wasn't reflected into the restart window which remained at its original defaults of 4 segments for local and 1 segment for all other connections. Both values are controllable through sysctl net.inet.tcp.local_slowstart_flightsize and net.inet.tcp.slowstart_flightsize. The increase helps TCP's slow start algorithm to open up the congestion window much faster. Reviewed by: lstewart MFC after: 1 week Revision Changes Path 1.170 +26 -15 src/sys/netinet/tcp_output.c 1.188 +2 -0 src/sys/netinet/tcp_var.h