From owner-freebsd-current@FreeBSD.ORG Wed Jul 18 19:54:55 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 A8AC116A40A for ; Wed, 18 Jul 2007 19:54:55 +0000 (UTC) (envelope-from almarrie@gmail.com) Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.240]) by mx1.freebsd.org (Postfix) with ESMTP id 5AE1B13C4A5 for ; Wed, 18 Jul 2007 19:54:55 +0000 (UTC) (envelope-from almarrie@gmail.com) Received: by an-out-0708.google.com with SMTP id c14so76760anc for ; Wed, 18 Jul 2007 12:54:54 -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=NZZXHEo0x2HiSC0pYGT+XtOTUzHmM1c60bH6dphn11ShojSkxuvACpX/WnuYKu0wAh4MbfUCRojG243HRQSXdLT9Jgew8sbVF+q+ihNnJzzoofd3mhARb4KlLSEn3+2QWVZYLZJLCxKN7xo9D9/mxAIEGdL8dsehO7uQV7b71Ew= 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=ANsADj6CEjO5eK3PE8lK+eR4PfHa8F89c0qzeWdhf9hPVfBkZC8lpN0Wc4YuXV1192iz64C7vcTJrse2VsvZAwEpEXMWMkuUecGIZR3kD0HUyF2rlW8wIYcDLDSOIOCDl6jqfcj69Cmmr73v7ZrPNrF69JioDgeJZZ/+Cbzrq4g= Received: by 10.100.13.12 with SMTP id 12mr1144979anm.1184788494299; Wed, 18 Jul 2007 12:54:54 -0700 (PDT) Received: by 10.100.9.14 with HTTP; Wed, 18 Jul 2007 12:54:54 -0700 (PDT) Message-ID: <499c70c0707181254j23c3ca39mcb17f6aa8fbc0de8@mail.gmail.com> Date: Wed, 18 Jul 2007 22:54:54 +0300 From: "Abdullah Ibn Hamad Al-Marri" To: "Jeff Roberson" In-Reply-To: <20070717182819.L92541@10.0.0.1> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070717182819.L92541@10.0.0.1> Cc: current@freebsd.org Subject: Re: cvs commit: src/sys/kern sched_ule.c (fwd) 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: Wed, 18 Jul 2007 19:54:55 -0000 On 7/18/07, Jeff Roberson wrote: > Thanks everyone for your help. In summary it sounds like there are two > issues. > > 1) kqemu explicitly uses sched_lock. I'll see if I can contact the > author about fixing this. > > 2) As much as a 6-7% slowdown on buildworld on dual core machines as > compared to 4BSD. I'm not sure if I'm going to do anything about this. > Once you get to 4 or 8 cores and -j8 or more they even out with ULE having > significantly less system time. I don't know if I want to compromise that > for slightly better dual core compile times. > > This is in the tree for 7.0 now though. I'm very excited to see this > happen. Thank you Jeff, Dr. Robert, jhb, and the rest of you commiters who worked very hard to make this comes true, and we finally got rid of giant lock, and FreeBSD is fast as we we knew it in the 90s. I have UP P4 2.0 GHz i386 and AMD64 powered by Intel C2D E6600 using it and it's so solid since more than 24 hours and no stability of slow performance issues appeared till now :) Both running heavy MySQL server with too many queries make it busy 24/7. -- Regards, -Abdullah Ibn Hamad Al-Marri Arab Portal http://www.WeArab.Net/