From owner-freebsd-questions@FreeBSD.ORG Fri Oct 17 06:06:59 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A49F116A4B3 for ; Fri, 17 Oct 2003 06:06:59 -0700 (PDT) Received: from smtp03.mrf.mail.rcn.net (smtp03.mrf.mail.rcn.net [207.172.4.62]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0844F43F75 for ; Fri, 17 Oct 2003 06:06:59 -0700 (PDT) (envelope-from roberthuff@rcn.com) Received: from 209-6-197-67.c3-0.smr-ubr1.sbo-smr.ma.cable.rcn.com ([209.6.197.67] helo=jerusalem.litteratus.org.litteratus.org) by smtp03.mrf.mail.rcn.net with esmtp (Exim 3.35 #4) id 1AAUJm-0002BM-00 for freebsd-questions@freebsd.org; Fri, 17 Oct 2003 09:06:58 -0400 From: Robert Huff MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16271.59761.630074.394530@jerusalem.litteratus.org> Date: Fri, 17 Oct 2003 09:06:57 -0400 To: freebsd-questions@freebsd.org In-Reply-To: <20031017141842.T84681@mail.physik.uni-mainz.de> References: <20031017141842.T84681@mail.physik.uni-mainz.de> X-Mailer: VM 7.14 under 21.5 (beta15) "celery" XEmacs Lucid Subject: Performance impact with SCHED_ULE in 5.1? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Oct 2003 13:06:59 -0000 > Using SCHED_ULE instead of SCHED_4BSD seems to result in massive > performance losses in NFS in conjunction with the Intel "em"-NICs. > Does anybody recognized similar problems? SCHED_ULE is very much a work-in-progress; I have seen reports of both instability and performance loss, not limited to a particular hardware setup. Robert Huff