From owner-freebsd-current@FreeBSD.ORG Sun Jul 12 10:41:12 2009 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8A8C4106566B for ; Sun, 12 Jul 2009 10:41:12 +0000 (UTC) (envelope-from uqs@spoerlein.net) Received: from acme.spoerlein.net (cl-43.dus-01.de.sixxs.net [IPv6:2a01:198:200:2a::2]) by mx1.freebsd.org (Postfix) with ESMTP id 03FF58FC16 for ; Sun, 12 Jul 2009 10:41:11 +0000 (UTC) (envelope-from uqs@spoerlein.net) Received: from acme.spoerlein.net (localhost.spoerlein.net [127.0.0.1]) by acme.spoerlein.net (8.14.3/8.14.3) with ESMTP id n6CAfAYn036577 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 12 Jul 2009 12:41:10 +0200 (CEST) (envelope-from uqs@spoerlein.net) Received: (from uqs@localhost) by acme.spoerlein.net (8.14.3/8.14.3/Submit) id n6CAfA1r036576 for current@freebsd.org; Sun, 12 Jul 2009 12:41:10 +0200 (CEST) (envelope-from uqs@spoerlein.net) Date: Sun, 12 Jul 2009 12:41:10 +0200 From: Ulrich =?utf-8?B?U3DDtnJsZWlu?= To: current@freebsd.org Message-ID: <20090712104110.GH2145@acme.spoerlein.net> Mail-Followup-To: current@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.5.20 (2009-06-14) Cc: Subject: t_delta too long or short X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Sun, 12 Jul 2009 10:41:12 -0000 Hi all, running 8.0BETA with bootverbose currently, and I notice the following recurring kernel output: t_delta 15.fe9640b115166d14 too short t_delta 15.fee2074e546b65c6 too short t_delta 15.fdd3965ad0e1cb1c too short t_delta 16.010a6ee0b107cf1c too long t_delta 15.fece4884c256229a too short t_delta 16.0124b33bf29dc2d8 too long t_delta 15.fdcf9fd4d4cf1482 too short t_delta 16.012bf763f1609fee too long t_delta 16.011f5e6d41ebf2c8 too long t_delta 15.fe33466a7df7416c too short ... Some more information: Timecounter "i8254" frequency 1193182 Hz quality 0 Calibrating TSC clock ... TSC clock: 3332972180 Hz CPU: Intel(R) Core(TM)2 Duo CPU E8600 @ 3.33GHz (3332.97-MHz K8-class CPU) Origin = "GenuineIntel" Id = 0x1067a Stepping = 10 Features=0xbfebfbff Features2=0x408e3fd AMD Features=0x20100800 AMD Features2=0x1 TSC: P-state invariant real memory = 4294967296 (4096 MB) ... ACPI timer: 1/1 1/1 1/1 1/1 1/1 1/1 1/1 1/1 1/1 1/1 -> 10 Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000 acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0 ... acpi_hpet0: iomem 0xfed00000-0xfed003ff on acpi0 acpi_hpet0: vend: 0x8086 rev: 0x1 num: 3 hz: 14318180 opts: legacy_route 64-bit Timecounter "HPET" frequency 14318180 Hz quality 900 ... Timecounter "TSC" frequency 3332972180 Hz quality -100 Timecounters tick every 10.000 msec some sysctl output: kern.timecounter.tick: 1 kern.timecounter.choice: TSC(-100) HPET(900) ACPI-fast(1000) i8254(0) dummy(-1000000) kern.timecounter.hardware: ACPI-fast kern.timecounter.stepwarnings: 0 kern.timecounter.tc.i8254.mask: 65535 kern.timecounter.tc.i8254.counter: 41309 kern.timecounter.tc.i8254.frequency: 1193182 kern.timecounter.tc.i8254.quality: 0 kern.timecounter.tc.ACPI-fast.mask: 16777215 kern.timecounter.tc.ACPI-fast.counter: 13709372 kern.timecounter.tc.ACPI-fast.frequency: 3579545 kern.timecounter.tc.ACPI-fast.quality: 1000 kern.timecounter.tc.HPET.mask: 4294967295 kern.timecounter.tc.HPET.counter: 906312624 kern.timecounter.tc.HPET.frequency: 14318180 kern.timecounter.tc.HPET.quality: 900 kern.timecounter.tc.TSC.mask: 4294967295 kern.timecounter.tc.TSC.counter: 1286877466 kern.timecounter.tc.TSC.frequency: 3332972180 kern.timecounter.tc.TSC.quality: -100 kern.timecounter.smp_tsc: 0 kern.timecounter.invariant_tsc: 1 While I have powerd running usually, the messages also appear when powerd is not running and the CPUs are fixed to C1 state. Shall I worry? Is this normal and expected? Cheers, Ulrich Spörlein