From owner-freebsd-bugs@FreeBSD.ORG Fri Apr 27 09:50:11 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6C69D106566B for ; Fri, 27 Apr 2012 09:50:11 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 52BD58FC23 for ; Fri, 27 Apr 2012 09:50:11 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q3R9oAfX062720 for ; Fri, 27 Apr 2012 09:50:10 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q3R9oAVJ062719; Fri, 27 Apr 2012 09:50:10 GMT (envelope-from gnats) Date: Fri, 27 Apr 2012 09:50:10 GMT Message-Id: <201204270950.q3R9oAVJ062719@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org From: "Alexander Churanov" Cc: Subject: Re: kern/166549: [eventttimers] Clock stops ticking in some cases with new timer framework in 9 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Alexander Churanov List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Apr 2012 09:50:11 -0000 The following reply was made to PR kern/166549; it has been noted by GNATS. From: "Alexander Churanov" To: bug-followup@freebsd.org, lists@rewt.org.uk Cc: Subject: Re: kern/166549: [eventttimers] Clock stops ticking in some cases with new timer framework in 9 Date: Fri, 27 Apr 2012 13:45:28 +0400 I also observe the same problem and decided to submit more data. Output of 'uname -a': FreeBSD vps-1 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:15:25 UTC 2012 root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 'svn up' and 'ssh somebody@localhost' hang. According to ktrace it's on select() call. Output of 'sysctl kern.timecounter' kern.timecounter.tick: 1 kern.timecounter.choice: TSC(-100) i8254(0) dummy(-1000000) kern.timecounter.hardware: i8254 kern.timecounter.stepwarnings: 0 kern.timecounter.tc.i8254.mask: 65535 kern.timecounter.tc.i8254.counter: 15162 kern.timecounter.tc.i8254.frequency: 1193182 kern.timecounter.tc.i8254.quality: 0 kern.timecounter.tc.TSC.mask: 4294967295 kern.timecounter.tc.TSC.counter: 1850043174 kern.timecounter.tc.TSC.frequency: 2261052965 kern.timecounter.tc.TSC.quality: -100 kern.timecounter.smp_tsc: 0 kern.timecounter.invariant_tsc: 0 Output of 'sysctl kern.eventtimer': kern.eventtimer.choice: LAPIC(400) i8254(100) RTC(0) kern.eventtimer.et.LAPIC.flags: 15 kern.eventtimer.et.LAPIC.frequency: 50001127 kern.eventtimer.et.LAPIC.quality: 400 kern.eventtimer.et.RTC.flags: 17 kern.eventtimer.et.RTC.frequency: 32768 kern.eventtimer.et.RTC.quality: 0 kern.eventtimer.et.i8254.flags: 1 kern.eventtimer.et.i8254.frequency: 1193182 kern.eventtimer.et.i8254.quality: 100 kern.eventtimer.periodic: 0 kern.eventtimer.timer: LAPIC kern.eventtimer.idletick: 0 kern.eventtimer.singlemul: 4 Output of 'vmstat -i': interrupt total rate irq5: re0 uhci0 3066560 66 irq10: re1 80 0 irq14: ata0 482243 10 cpu0:timer 5509435 119 cpu1:timer 862559 18 Total 9920877 215 sysctl kern.eventtimer.periodic=1 starts the clock! A part of dmesg that seems relevant: ACPI Error: A valid RSDP was not found (20110527/tbxfroot-237) Copyright (c) 1992-2012 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:15:25 UTC 2012 root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 ACPI Error: A valid RSDP was not found (20110527/tbxfroot-237) CPU: Intel(R) Xeon(R) CPU E5520 @ 2.27GHz (2261.05-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x106a5 Family = 6 Model = 1a Stepping = 5 Features=0x1781fbff Features2=0x80982201 AMD Features=0x20100000 AMD Features2=0x1 real memory = 536870912 (512 MB) avail memory = 506146816 (482 MB) MPTable: <_HVMCPU_ XEN > Event timer "LAPIC" quality 400 FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs FreeBSD/SMP: 1 package(s) x 2 core(s) cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 2 ioapic0: Changing APIC ID to 1 ioapic0: Assuming intbase of 0 ioapic0 irqs 0-47 on motherboard kbd1 at kbdmux0 ACPI Error: A valid RSDP was not found (20110527/tbxfroot-237) ACPI: Table initialisation failed: AE_NOT_FOUND ACPI: Try disabling either ACPI or apic support. I hope this will help to resolve the issue. -- Using Opera's revolutionary email client: http://www.opera.com/mail/