From owner-freebsd-hackers@FreeBSD.ORG Sun Feb 25 06:55:21 2007 Return-Path: X-Original-To: hackers@freebsd.org Delivered-To: freebsd-hackers@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 47FA516A583 for ; Sun, 25 Feb 2007 06:55:21 +0000 (UTC) (envelope-from zombyfork@gmail.com) Received: from nz-out-0506.google.com (nz-out-0506.google.com [64.233.162.232]) by mx1.freebsd.org (Postfix) with ESMTP id 0103E13C478 for ; Sun, 25 Feb 2007 06:55:20 +0000 (UTC) (envelope-from zombyfork@gmail.com) Received: by nz-out-0506.google.com with SMTP id i11so1026176nzh for ; Sat, 24 Feb 2007 22:55:20 -0800 (PST) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:references; b=Y4mjtnOw/qI3fKB8r5Q8q45bTHVeX/0HsXaWJT4WZv9PHpQ1qoNDP76g/ifS5R6UpIU2hzXwXp2ouITOEvJSvtiD+h4f0Tol0ujs7HmmwLc2+Adb3sBfYdH79JR5Qk9JIDduaBlYF+oeLTPQ5K3ht0/8/tX36PL2RVwSllC5KgY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:references; b=tW+6gMGMmh1hAnc1cqFcv1QWnesl3Y8k+RT97Jgkuy7uOjLznTFVP9AqMRjz+QOJR9F3YUBp/0F5HrEITfNq97QJmwHRe+zZ652udJ5jjKhrSYhpNE2uxqY3gAk9o1AyWMw1k89Mxn7qyLQrmGTkkUZYe+YQJvmXyXtK8gm6NF0= Received: by 10.114.111.1 with SMTP id j1mr1685595wac.1172386519245; Sat, 24 Feb 2007 22:55:19 -0800 (PST) Received: by 10.115.108.15 with HTTP; Sat, 24 Feb 2007 22:55:19 -0800 (PST) Message-ID: <346a80220702242255q409e668eqcad84d848d363bd2@mail.gmail.com> Date: Sat, 24 Feb 2007 23:55:19 -0700 From: "Coleman Kane" To: "Kris Kennaway" In-Reply-To: <20070225060305.GA47361@xor.obsecurity.org> MIME-Version: 1.0 References: <20070224213111.GB41434@xor.obsecurity.org> <346a80220702242100i7ec22b5h4b25cc7d20d03e98@mail.gmail.com> <20070225054120.GA47059@xor.obsecurity.org> <20070225054755.GA33858@ramen.coleyandcheryl> <20070225060305.GA47361@xor.obsecurity.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: smp@freebsd.org, hackers@freebsd.org, current@freebsd.org, Coleman Kane Subject: Re: Progress on scaling of FreeBSD on 8 CPU systems X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: cokane@cokane.org List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Feb 2007 06:55:21 -0000 On 2/24/07, Kris Kennaway wrote: > > On Sun, Feb 25, 2007 at 05:47:55AM +0000, Coleman Kane wrote: > > On Sun, Feb 25, 2007 at 12:41:20AM -0500, Kris Kennaway wrote, and it > was proclaimed: > > > On Sat, Feb 24, 2007 at 10:00:35PM -0700, Coleman Kane wrote: > > > > > > > What does the performance curve look like for the in-CVS 7-CURRENT > tree with > > > > 4BSD or ULE ? How do those stand up against the Linux SMP scheduler > for > > > > scalability. It would be nice to see the comparison displayed to see > what > > > > the performance improvements of the aforementioned patch were > realized to. > > > > This would likely be a nice graphics for the SMPng project page, > BTW... > > > > > > There are graphs of this on Jeff's blog, referenced in that URL. > > > Fixing filedesc locking makes a HUGE difference. > > > > > > Kris > > > > Thanks. I saw that shortly after I sent the email... /me stupid. > > > > How stable is ULE now since the recent swath of rewrites in the past > months? > > I think what is in CVS for 7.x is pretty stable. One of the difficult > things with schedulers is making sure that all workloads perform well, > so testing in different environments is always helpful. > > Kris > > P.S. ULE in 6.x is still not recommended, but hopefully the fixes can > be merged at some point. I primarily use 7-CURRENT on my laptop. At some point I had ULE enabled just to share my experiences with development. What is the status with ULE on UP systems? Is it expected to be on-par or better than 4BSD, or is it now only recommended for MP? -- coleman