From owner-freebsd-stable@FreeBSD.ORG Tue Jun 12 02:13:58 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 29D5016A468 for ; Tue, 12 Jun 2007 02:13:58 +0000 (UTC) (envelope-from dillon@apollo.backplane.com) Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by mx1.freebsd.org (Postfix) with ESMTP id 0FFF113C465 for ; Tue, 12 Jun 2007 02:13:58 +0000 (UTC) (envelope-from dillon@apollo.backplane.com) Received: from apollo.backplane.com (localhost [127.0.0.1]) by apollo.backplane.com (8.13.8/8.13.7) with ESMTP id l5C2Dnnf055525; Mon, 11 Jun 2007 19:13:49 -0700 (PDT) Received: (from dillon@localhost) by apollo.backplane.com (8.13.8/8.13.4/Submit) id l5C2DlkO055522; Mon, 11 Jun 2007 19:13:47 -0700 (PDT) Date: Mon, 11 Jun 2007 19:13:47 -0700 (PDT) From: Matthew Dillon Message-Id: <200706120213.l5C2DlkO055522@apollo.backplane.com> To: Dmitry Morozovsky References: <20070606153542.Y76617@woozle.rinet.ru> <20070606231940.T91939@woozle.rinet.ru> <200706062127.l56LRYTe090137@apollo.backplane.com> <20070608111809.U97287@woozle.rinet.ru> <200706090809.l5989Mkj020033@apollo.backplane.com> <20070609163329.P4850@woozle.rinet.ru> <200706091957.l59JvDWR026822@apollo.backplane.com> <20070610175748.L88437@woozle.rinet.ru> <20070610193708.W88437@woozle.rinet.ru> Cc: freebsd-stable@freebsd.org, Ivan Voras Subject: Re: calcru: runtime went backwards, RELENG_6, SMP X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Jun 2007 02:13:58 -0000 :============================================================================== : cs3661.rinet.ru 192.38.7.240 2 u 354 1024 377 5.305 -66314. 4321.47 : ns.rinet.ru 130.207.244.240 2 u 365 1024 377 6.913 -66316. 4305.33 : whale.rinet.ru 195.2.64.5 2 u 358 1024 377 7.939 -66308. 4304.90 : :Any directions to debug this? : :Sincerely, :D.Marck [DM5020, MCK-RIPE, DM3-RIPN] Since you are running on HEAD now, could you also kgdb the live kernel and print cpu_ticks? I believe the sequence is (someone correct me if I am wrong): kgdb /kernel /dev/mem print cpu_ticks As for further tests... try building a non-SMP kernel (i.e. one that only recognizes one cpu) and see if the problem occurs there. That will determine whether there is a basic problem with time keeping or whether it is an issue with SMP. I'm afraid there isn't much more I can do to help, other then to make suggestions on tests that you can run that will hopefully ring a bell with another developer. -Matt Matthew Dillon