From owner-svn-src-stable@FreeBSD.ORG Thu Mar 1 13:05:33 2012 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 A7109106572F; Thu, 1 Mar 2012 13:05:31 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) by mx1.freebsd.org (Postfix) with ESMTP id CA5708FC12; Thu, 1 Mar 2012 13:05:30 +0000 (UTC) Received: from slw by zxy.spb.ru with local (Exim 4.69 (FreeBSD)) (envelope-from ) id 1S35G9-0008Xf-J1; Thu, 01 Mar 2012 16:37:25 +0400 Date: Thu, 1 Mar 2012 16:37:25 +0400 From: Slawa Olhovchenkov To: Gavin Atkinson Message-ID: <20120301123725.GF97848@zxy.spb.ru> References: <201201171352.q0HDq5n2092953@svn.freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201201171352.q0HDq5n2092953@svn.freebsd.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, svn-src-stable-9@freebsd.org Subject: Re: svn commit: r230266 - in stable/9/sys: amd64/amd64 i386/i386 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: Thu, 01 Mar 2012 13:05:34 -0000 On Tue, Jan 17, 2012 at 01:52:05PM +0000, Gavin Atkinson wrote: > Author: gavin > Date: Tue Jan 17 13:52:04 2012 > New Revision: 230266 > URL: http://svn.freebsd.org/changeset/base/230266 > > Log: > Merge r229085 from head: > > Default to not performing the early-boot memory tests when we detect we > are booting inside a VM. There are three reasons to disable this: > > o It causes the VM host to believe that all the tested pages or RAM are > in use. This in turn may force the host to page out pages of RAM > belonging to other VMs, or otherwise cause problems with fair resource > sharing on the VM cluster. > o It adds significant time to the boot process (around 1 second/Gig in > testing) > o It is unnecessary - the host should have already verified that the > memory is functional etc. > > Note that this simply changes the default when in a VM - it can still be > overridden using the hw.memtest.tests tunable. > > Early MFC requested by: bz How about similar behaviour for /boot/loader?