Date: Mon, 4 Jun 2007 15:05:33 +0100 From: "Joao Barros" <joao.barros@gmail.com> To: "Alexander Kabaev" <kabaev@gmail.com> Cc: youshi10@u.washington.edu, current@freebsd.org Subject: Re: Kudos to everyone who worked on the gcc-4.2 merge Message-ID: <70e8236f0706040705h6d459373n8fa83b32aeaca117@mail.gmail.com> In-Reply-To: <20070604091628.51e9632a@kan.dnsalias.net> References: <Pine.LNX.4.43.0706031730150.8063@hymn03.u.washington.edu> <20070604091628.51e9632a@kan.dnsalias.net>
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On 6/4/07, Alexander Kabaev <kabaev@gmail.com> wrote: > On Sun, 3 Jun 2007 17:30:15 -0700 (PDT) > youshi10@u.washington.edu wrote: > > > I just wanted to thank everyone who helped make the gcc 4.2 merge > > possible -- I can see a noticeable performance increase (1.5x ~ 2.0x > > load time decrease) in my server (P4 HTT with SMP). > > > > This will be one of the great changes that will put FreeBSD back on > > the map closer to many Linux distros. > > > > Once gcc 4.2.1 gets in the tree, things will be much better, I'm > > sure :). > > > > Thank you very much, and let me know if you need testing with gcc > > 4.2.1 when it rolls around ;). > > > > -Garrett > > > Thanks, but I think kudos are addressed to wrong people. I very much > doubt that GCC can be responsible for any, let alone dramatic, > performance differences. Most likely you see effects of hard work done > by SMP scalability guys. > > -- > Alexander Kabaev > > I emailed Garrett but forgot to cc current@ My question was: "Can you specify the workload that you verify that much improvement?" Like you I had my doubts gcc was responsible for such an improvement. -- Joao Barros
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