From owner-freebsd-stable@FreeBSD.ORG Mon Feb 13 23:11:57 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CD27416A420 for ; Mon, 13 Feb 2006 23:11:57 +0000 (GMT) (envelope-from frank@ircnow.org) Received: from scott.blazing.de (scott.blazing.de [80.86.187.157]) by mx1.FreeBSD.org (Postfix) with ESMTP id D1E9D43D46 for ; Mon, 13 Feb 2006 23:11:56 +0000 (GMT) (envelope-from frank@ircnow.org) Received: by scott.blazing.de (Postfix, from userid 510) id 4A0BA9579E; Tue, 14 Feb 2006 00:11:55 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on scott.blazing.de X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.1.0 Received: from shodan.nognu.de (shodan.nognu.de [85.14.216.230]) by scott.blazing.de (Postfix) with ESMTP id CE831958FC for ; Tue, 14 Feb 2006 00:09:36 +0100 (CET) Received: by shodan.nognu.de (nbSMTP-1.00) for uid 1002 frank@ircnow.org; Tue, 14 Feb 2006 00:09:37 +0100 (CET) Date: Tue, 14 Feb 2006 00:09:34 +0100 From: Frank Steinborn To: freebsd-stable@freebsd.org Message-ID: <20060213230934.GA1549@scott.blazing.de> Mail-Followup-To: freebsd-stable@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-PGP: 0x41F1741D User-Agent: mutt-ng/devel-r581 (FreeBSD) Subject: calcru: negative time (Interrupt Storm on cpu0: timer) 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: Mon, 13 Feb 2006 23:11:57 -0000 Hello, After reboot yesterday, my system suddenly started to flood syslog with following message: calcru: runtime went backwards from 1966191374 usec to 1966189453 usec for pid 29988 (screen) It's not only screen, i saw sh and su also, but in the last hour only screen. A vmstat -i and the same 5 seconds later: interrupt total rate irq1: atkbd0 1 0 irq13: npx0 1 0 irq14: ata0 410366 5 irq17: em0 20882069 263 cpu0: timer 158483081 2000 Total 179775518 2268 interrupt total rate irq1: atkbd0 1 0 irq13: npx0 1 0 irq14: ata0 410430 5 irq17: em0 20885602 263 cpu0: timer 158505514 2000 Total 179801548 2268 Is this an interrupt storm? I know that there is a FAQ entry about the negative time issue, but it seems this is more a bad workaround I guess. The system was running without problems for 3 months or so and as I said the problem suddenly appeared yesterday. Any hints on whats wrong here? Thanks in advance, Frank