From owner-freebsd-current@FreeBSD.ORG Thu Jun 15 20:32:00 2006 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DC01C16A474 for ; Thu, 15 Jun 2006 20:32:00 +0000 (UTC) (envelope-from xdivac02@stud.fit.vutbr.cz) Received: from eva.fit.vutbr.cz (eva.fit.vutbr.cz [147.229.10.14]) by mx1.FreeBSD.org (Postfix) with ESMTP id DE5E043D73 for ; Thu, 15 Jun 2006 20:31:54 +0000 (GMT) (envelope-from xdivac02@stud.fit.vutbr.cz) Received: from eva.fit.vutbr.cz (localhost [127.0.0.1]) by eva.fit.vutbr.cz (envelope-from xdivac02@eva.fit.vutbr.cz) (8.13.7/8.13.7) with ESMTP id k5FKVnYj077679 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO) for ; Thu, 15 Jun 2006 22:31:49 +0200 (CEST) Received: (from xdivac02@localhost) by eva.fit.vutbr.cz (8.13.7/8.13.3/Submit) id k5FKVnW2077678 for current@freebsd.org; Thu, 15 Jun 2006 22:31:49 +0200 (CEST) Date: Thu, 15 Jun 2006 22:31:49 +0200 From: Divacky Roman To: current@freebsd.org Message-ID: <20060615203149.GA77610@stud.fit.vutbr.cz> References: <20060615220336.6946c760@Magellan.Leidinger.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060615220336.6946c760@Magellan.Leidinger.net> User-Agent: Mutt/1.4.2i X-Scanned-By: MIMEDefang 2.54 on 147.229.10.14 Cc: Subject: Re: HEADS-UP: removed COMPAT_43 from GENERIC (and other configs) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Jun 2006 20:32:00 -0000 On Thu, Jun 15, 2006 at 10:03:36PM +0200, Alexander Leidinger wrote: > Hi, > > the only place where COMPAT_43 is needed (as in: does not compile > without it) is in the (outdated/not usable since too old) svr4 code. > > Previously this was also needed for the linuxolator, but this is not > the case anymore. > > So I removed this option from the GENERIC kernels. If the removal of > COMPAT_43 results in a not working program, please recompile it and all > dependencies and try again before reporting a problem. > > Removing the option from your kernel may result in a small performance > increase for some workloads. > > Bye, > Alexander. thank you alexander! just a note... COMPAT_43 removal gives a huge improvement in gepid() performance and also kris reported that some highly contested mutexes are less contested without COMPAT_43, so its great to finally have this removed. roman