From owner-freebsd-current@FreeBSD.ORG Tue Jul 17 19:59:48 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 53DD416A404; Tue, 17 Jul 2007 19:59:48 +0000 (UTC) (envelope-from jroberson@chesapeake.net) Received: from webaccess-cl.virtdom.com (webaccess-cl.virtdom.com [216.240.101.25]) by mx1.freebsd.org (Postfix) with ESMTP id 1F26413C4A6; Tue, 17 Jul 2007 19:59:48 +0000 (UTC) (envelope-from jroberson@chesapeake.net) Received: from [192.168.1.101] (c-71-231-138-78.hsd1.or.comcast.net [71.231.138.78]) (authenticated bits=0) by webaccess-cl.virtdom.com (8.13.6/8.13.6) with ESMTP id l6HJxjub042137 (version=TLSv1/SSLv3 cipher=DHE-DSS-AES256-SHA bits=256 verify=NO); Tue, 17 Jul 2007 15:59:46 -0400 (EDT) (envelope-from jroberson@chesapeake.net) Date: Tue, 17 Jul 2007 13:02:52 -0700 (PDT) From: Jeff Roberson X-X-Sender: jroberson@10.0.0.1 To: youshi10@u.washington.edu In-Reply-To: Message-ID: <20070717125133.S92541@10.0.0.1> References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Attilio Rao , current@freebsd.org 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 19:59:48 -0000 On Tue, 17 Jul 2007, youshi10@u.washington.edu wrote: > > Unfortunately those results are still based on 2.6.20, not 2.6.22 (2 minor > patch revision difference). > > I assume that that's for a vanilla Linux kernel? Look more closely; The green line is linux-2.6.21 with the new glibc. I sent my kernel config to some linux hackers to look at. We removed some minor debugging code to get these results. I have also tested with 2.6.22 with no real change. Although many other people saw great improvements. I will update to fedora core 7 eventually although I supposedly have the relevant fixes. In my mind I hope that linux addresses their issues and that really isn't my primary concern. My primary concern is that freebsd is now becoming competitive on higher-end server class hardware for a variety of workloads where it was not before. I benchmarked linux just to see where we are at as they are generally considered fast and scalable. The credit for the great improvements we've seen from 6 to 7 should go to the many developers who have put a lot of hard work into locking individual subsystems and the primitives. The scheduler is only able to do better now because there is less contention over all. Thank you, Jeff > > -Garrett > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >