From owner-freebsd-stable@FreeBSD.ORG Tue Oct 16 20:36:33 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id ECE0F16A417 for ; Tue, 16 Oct 2007 20:36:33 +0000 (UTC) (envelope-from josh.carroll@gmail.com) Received: from wr-out-0506.google.com (wr-out-0506.google.com [64.233.184.238]) by mx1.freebsd.org (Postfix) with ESMTP id AE0E613C468 for ; Tue, 16 Oct 2007 20:36:33 +0000 (UTC) (envelope-from josh.carroll@gmail.com) Received: by wr-out-0506.google.com with SMTP id 70so108484wra for ; Tue, 16 Oct 2007 13:36:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; 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:content-transfer-encoding:content-disposition:references; bh=xIx33vVfhXmpHF/+6feJYGnBa76TpbNW/44KBOx03qY=; b=ci0vXnHzhzt8dxysHumSvKXoM35NfHeDeid0pCGo9drc++YEKzXorp81Mr0gfGtcwxwiLNfqN8eIgIpXtOkal5OJgQJWZGeghE9+po4rJKTMQJh23mi8bEuZxnhMyMfxovsPmm0sq1+ETBSDbNp619hJU9Xr9pc1AiObxxVFljM= 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:content-transfer-encoding:content-disposition:references; b=kXAsx6ql4c6I71tZZahcekD+bNr27ozrKYDziSBkyCmu2kx0qUDqISoJLjmcKhzjmQX5qauqR8Iy4vRMzNu5HbrUqn4mEiRDG4yD6OSfhy9xQVrub8Gh6kfVzhsAFdU6rjsW4JLwxUVReaZH7tsU2Pkdl24xKJXTZWZSEI4GBoI= Received: by 10.90.91.14 with SMTP id o14mr11320652agb.1192565395876; Tue, 16 Oct 2007 13:09:55 -0700 (PDT) Received: by 10.90.29.9 with HTTP; Tue, 16 Oct 2007 13:09:55 -0700 (PDT) Message-ID: <8cb6106e0710161309o4658f41fse686b637d96be7f1@mail.gmail.com> Date: Tue, 16 Oct 2007 16:09:55 -0400 From: "Josh Carroll" To: "Kris Kennaway" In-Reply-To: <47150F82.9060805@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <47150D87.3070804@gmx.de> <47150F82.9060805@FreeBSD.org> Cc: "\[LoN\]Kamikaze" , freebsd-current@freebsd.org, freebsd-stable@freebsd.org Subject: Re: SCHED_4BSD in RELENG_7 disturbs workflow X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: josh.carroll@gmail.com List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Oct 2007 20:36:34 -0000 > Not to say that any problems that might have developed with SCHED_4BSD > should not be fixed, but you should give SCHED_ULE a try since it brings > benefits even for single CPU systems (e.g. better interactive response). For my particular work load, 4BSD is actually faster than ULE in RELENG_7. Specifically, on a Q6600 running ffmpeg -threads 8 to transcode some H.264 video, 4BSD is about 5% faster. I took a sample video and transcoded the first 120 seconds of it, and here are the results (including a control from 6.2-RELEASE-p7/4BSD scheduler): releng_6_2 (4BSD) 1:32.39 releng_7 (4BSD) 1:32.44 releng_7 (ULE) 1:37.15 This is obviously a different scenario from MySQL. So perhaps ULE isn't as well tuned for cases like ffmpeg? Josh