From owner-cvs-src-old@FreeBSD.ORG Sat Nov 6 15:40:42 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 DE4101065740 for ; Sat, 6 Nov 2010 15:40:42 +0000 (UTC) (envelope-from lstewart@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [IPv6:2001:4f8:fff6::29]) by mx1.freebsd.org (Postfix) with ESMTP id B12F88FC14 for ; Sat, 6 Nov 2010 15:40:42 +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 oA6Feg77063055 for ; Sat, 6 Nov 2010 15:40:42 GMT (envelope-from lstewart@repoman.freebsd.org) Received: (from svn2cvs@localhost) by repoman.freebsd.org (8.14.4/8.14.4/Submit) id oA6Fega5063054 for cvs-src-old@freebsd.org; Sat, 6 Nov 2010 15:40:42 GMT (envelope-from lstewart@repoman.freebsd.org) Message-Id: <201011061540.oA6Fega5063054@repoman.freebsd.org> X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to lstewart@repoman.freebsd.org using -f From: Lawrence Stewart Date: Sat, 6 Nov 2010 15:40:34 +0000 (UTC) To: cvs-src-old@freebsd.org X-FreeBSD-CVS-Branch: RELENG_7 Subject: cvs commit: src/sys/netinet tcp_reass.c 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: Sat, 06 Nov 2010 15:40:42 -0000 lstewart 2010-11-06 15:40:34 UTC FreeBSD src repository Modified files: (Branch: RELENG_7) sys/netinet tcp_reass.c Log: SVN rev 214889 on 2010-11-06 15:40:34Z by lstewart MFC r213912: - Switch the "net.inet.tcp.reass.cursegments" and "net.inet.tcp.reass.maxsegments" sysctl variables to be based on UMA zone stats. The value returned by the cursegments sysctl is approximate owing to the way in which uma_zone_get_cur is implemented. - Discontinue use of V_tcp_reass_qsize as a global reassembly segment count variable in the reassembly implementation. The variable was used without proper synchronisation and was duplicating accounting done by UMA already. The lack of synchronisation was particularly problematic on SMP systems terminating many TCP sessions, resulting in poor TCP performance for connections with non-zero packet loss. The base code from r213912 was modified as part of this MFC in order to work correctly on FreeBSD 7. Sponsored by: FreeBSD Foundation Reviewed by: andre, gnn, rpaulo (as part of a larger patch) Revision Changes Path 1.353.2.3 +23 -13 src/sys/netinet/tcp_reass.c