Date: Thu, 14 Sep 2006 13:51:39 -0400 From: Martin Cracauer <cracauer@cons.org> To: RJ45 <rj45@slacknet.com> Cc: freebsd-questions@freebsd.org Subject: Re: nocona CPU Message-ID: <20060914175139.GA16873@cons.org> In-Reply-To: <Pine.LNX.4.61.0609140145180.17396@slacknet.com> References: <Pine.LNX.4.61.0609140145180.17396@slacknet.com>
next in thread | previous in thread | raw e-mail | index | archive | help
RJ45 wrote on Thu, Sep 14, 2006 at 01:47:28AM -0600: > > > Hello I wanted to buildworld and kernel on FReeBSD 6.1 since I have Xeon > cpu, I Wanted to rebuild it with CPUTYPE=nocona > > when I put the oprion in /etc/make.conf upon compilation instead of > -march=nocona is used -march=prescott Expected behavior. Both are Netburst architecture CPUs and Prescott is the only -march for Netburst. > Can anyway really have any kind of improvement using CPUTYPE=nocona for > userland and kernel ? Not over Prescott. In general it is doubtful. Netburst only likes to run very specific code fast and gcc can't do much about it. Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer@cons.org> http://www.cons.org/cracauer/ FreeBSD - where you want to go, today. http://www.freebsd.org/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060914175139.GA16873>