From owner-freebsd-current@FreeBSD.ORG Tue Jul 17 19:04:41 2007 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id D65ED16A408 for ; Tue, 17 Jul 2007 19:04:41 +0000 (UTC) (envelope-from almarrie@gmail.com) Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.246]) by mx1.freebsd.org (Postfix) with ESMTP id 881EA13C4B2 for ; Tue, 17 Jul 2007 19:04:41 +0000 (UTC) (envelope-from almarrie@gmail.com) Received: by an-out-0708.google.com with SMTP id c14so383064anc for ; Tue, 17 Jul 2007 12:04:40 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=QBxpfchF1tlYJkw4YaNMKjHwQ6mXq0NDtCwxX1c/Lvjw7J+Oxsx3M4Ro1eHOx1ywF97kyYY1lFsPIv9rDKHhfZguLBLuJ7Idcz4yli83+THKpbSGRI6Ac1BsqkbeVifHbt/o2vpf+KkNE3kzT+T4gUQtwX6LIqTE+x90rnZvRzI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=bLJK3o4ukMDYIKDVzjolOnrjHl96ym8H38Nwiogi+94JqP5tRF4AdOiUEETzUSSZHtOJbN81EWsPBSYEJm+jxAHu6mqDrvmQUmVnnCm5MkDqDEggVJ2pzhAiHUSuKYWA/nDVT6u7Za9UbJWaxdf+XVONRaf2QMSBdByHszFebag= Received: by 10.100.8.18 with SMTP id 18mr392186anh.1184699080645; Tue, 17 Jul 2007 12:04:40 -0700 (PDT) Received: by 10.100.9.14 with HTTP; Tue, 17 Jul 2007 12:04:40 -0700 (PDT) Message-ID: <499c70c0707171204o5140af3bn3e8c5818bac93055@mail.gmail.com> Date: Tue, 17 Jul 2007 22:04:40 +0300 From: "Abdullah Ibn Hamad Al-Marri" To: "Attilio Rao" In-Reply-To: <3bbf2fe10707171200t4f84084bj8a206268215a9570@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070716233030.D92541@10.0.0.1> <469CACEC.1000103@freebsd.org> <576dcbc20707170624kb671fe4ia5ddac21af93eccd@mail.gmail.com> <20070717114147.J92541@10.0.0.1> <499c70c0707171155w318ece06j88f31bc19de8776b@mail.gmail.com> <3bbf2fe10707171200t4f84084bj8a206268215a9570@mail.gmail.com> Cc: Jeff Roberson , Claus Guttesen , current@freebsd.org, lveax Subject: Re: ULE/SCHED_SMP diff for 7.0, buildkernel & thanks. 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: Tue, 17 Jul 2007 19:04:41 -0000 On 7/17/07, Attilio Rao wrote: > 2007/7/17, Abdullah Ibn Hamad Al-Marri : > > On 7/17/07, Jeff Roberson wrote: > > > With regards to buildkernel times; I do not want to sacrafice performance > > > on other benchmarks to improve buildkernel. The problem is that 4BSD is > > > as agressive as possible at scheduling work on idle cores. This behavior > > > that helps one buildworld hurts on other, in my opinion, more important > > > benchmarks. > > > > > > For example: http://people.freebsd.org/~jeff/sysbench.png > > > > > > ULE is 33% faster than SCHED_4BSD at this mysql test. This is a direct > > > result of prefering to idle to make more efficient scheduling decisions. > > > ULE is also faster at various networking benchmarks for similar reasons. > > > > > > I also believe that while the real time may be slower on buildworld the > > > system and user time will be smaller by a degree greater than the delta in > > > real time. This means that while you're building packages you have a > > > little more cpu time leftover to handle other tasks. Furthermore, as the > > > number of cores goes up things start to tip in favor of ULE although this > > > is somewhat because it's harder for even 4BSD to keep them busy due to > > > disk bandwidth. > > > > > > Thanks everyone for testing. Can someone confirm that they have tested > > > with x86 rather than amd64? I will probably commit later today. > > > > > > Thanks, > > > Jeff > > > > Did you compare it to latest Linux fixes? is FreeBSD + ULE + MySQL > > still faster than linux? > > Just look at the link Jeff posted, it seems very well explaining :). > > Attilio heh I love it! When I checked last time, Linux took it over, I'm glad to see FreeBSD is the leader now again! -- Regards, -Abdullah Ibn Hamad Al-Marri Arab Portal http://www.WeArab.Net/