From owner-svn-src-stable@FreeBSD.ORG Tue Sep 29 19:57:08 2009 Return-Path: Delivered-To: svn-src-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 20AEC106566C; Tue, 29 Sep 2009 19:57:08 +0000 (UTC) (envelope-from kensmith@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 0FC508FC1A; Tue, 29 Sep 2009 19:57:08 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id n8TJv7jP094475; Tue, 29 Sep 2009 19:57:07 GMT (envelope-from kensmith@svn.freebsd.org) Received: (from kensmith@localhost) by svn.freebsd.org (8.14.3/8.14.3/Submit) id n8TJv7bS094474; Tue, 29 Sep 2009 19:57:07 GMT (envelope-from kensmith@svn.freebsd.org) Message-Id: <200909291957.n8TJv7bS094474@svn.freebsd.org> From: Ken Smith Date: Tue, 29 Sep 2009 19:57:06 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org X-SVN-Group: stable-8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r197623 - stable/8 X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2009 19:57:08 -0000 Author: kensmith Date: Tue Sep 29 19:57:06 2009 New Revision: 197623 URL: http://svn.freebsd.org/changeset/base/197623 Log: Update description of debugging support. Submitted by: ivoras (but heavily modified) Pointy hat: me Approved by: re (implicit) Modified: stable/8/UPDATING Modified: stable/8/UPDATING ============================================================================== --- stable/8/UPDATING Tue Sep 29 19:50:50 2009 (r197622) +++ stable/8/UPDATING Tue Sep 29 19:57:06 2009 (r197623) @@ -8,19 +8,12 @@ Items affecting the ports and packages s /usr/ports/UPDATING. Please read that file before running portupgrade. -NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS SLOW: - FreeBSD 8.x has many debugging features turned on, in - both the kernel and userland. These features attempt to detect - incorrect use of system primitives, and encourage loud failure - through extra sanity checking and fail stop semantics. They - also substantially impact system performance. If you want to - do performance measurement, benchmarking, and optimization, - you'll want to turn them off. This includes various WITNESS- - related kernel options, INVARIANTS, malloc debugging flags - in userland, and various verbose features in the kernel. Many - developers choose to disable these features on build machines - to maximize performance. (To disable malloc debugging, run - ln -s aj /etc/malloc.conf.) +NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS SLOW ON IA64 OR SUN4V: + For ia64 the INVARIANTS and INVARIANTS_SUPPORT kernel options + were left in the GENERIC kernel because the kernel does not + work properly without them. For sun4v all of the normal kernel + debugging tools present in HEAD were left in place because + sun4v support still needs work to become production ready. 20090929: 802.11s D3.03 support was committed. This is incompatible with