From owner-freebsd-current@FreeBSD.ORG Thu May 20 09:38:53 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 25D4216A4CE for ; Thu, 20 May 2004 09:38:53 -0700 (PDT) Received: from corbulon.video-collage.com (corbulon.video-collage.com [64.35.99.179]) by mx1.FreeBSD.org (Postfix) with ESMTP id B684A43D41 for ; Thu, 20 May 2004 09:38:52 -0700 (PDT) (envelope-from mi+mx@aldan.algebra.com) Received: from 250-217.customer.cloud9.net (195-11.customer.cloud9.net [168.100.195.11])i4KGcoLA080895 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 20 May 2004 12:38:51 -0400 (EDT) (envelope-from mi+mx@aldan.algebra.com) Received: from localhost (mteterin@localhost [127.0.0.1]) i4KGcPMa026976; Thu, 20 May 2004 12:38:26 -0400 (EDT) (envelope-from mi+mx@aldan.algebra.com) From: Mikhail Teterin Organization: Virtual Estates, Inc. To: Dan Nelson Date: Thu, 20 May 2004 12:38:25 -0400 User-Agent: KMail/1.6.1 References: <200405200334.i4K3YlGU027751@corbulon.video-collage.com> <20040520151029.GA19455@dan.emsphone.com> In-Reply-To: <20040520151029.GA19455@dan.emsphone.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="koi8-u" Content-Transfer-Encoding: 7bit Message-Id: <200405201238.25095@misha-mx.virtual-estates.net> X-Scanned-By: MIMEDefang 2.39 X-Mailman-Approved-At: Fri, 21 May 2004 04:56:27 -0700 cc: current@freebsd.org Subject: Re: a scheduling question X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Thu, 20 May 2004 16:38:53 -0000 =In the last episode (May 19), Mikhail Teterin said: => Here is a top's snapshot from a dual CPU machine. Two lame encoders => compete for the first CPU, while the total idle time is 35.6%. Why is => that? Because they are nice? Is niceness really supposed to allow for => wasted CPU? Thanks! = =You're probably using SCHED_ULE? Try with 4BSD. Yes, I do. But is not SCHED_ULE considered a _better_ replacement for SCHED_4BSD -- _especially_ on SMP systems (such as mine)? Or is it now known to be problematic and (semi-) stable installations should use 4BSD? Thanks! -mi