Date: Thu, 18 Sep 2008 21:38:07 GMT From: Torbjorn Granlund <tg.at.swox.com@FreeBSD.org> To: freebsd-gnats-submit@FreeBSD.org Subject: amd64/127484: Drift problem with FreeBSD 7.0 and 7.1 PRERELEASE Message-ID: <200809182138.m8ILc75d083868@www.freebsd.org> Resent-Message-ID: <200809182140.m8ILe1Mg072778@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 127484 >Category: amd64 >Synopsis: Drift problem with FreeBSD 7.0 and 7.1 PRERELEASE >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-amd64 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Sep 18 21:40:01 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Torbjorn Granlund >Release: 7.0, 7.1 PRERELEASE >Organization: >Environment: FreeBSD carlos.gmplib.org 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #0: Tue Sep 16 22:32:59 CEST 2008 root@carlos.gmplib.org:/usr/src/sys/amd64/compile/GENERIC amd64 >Description: The clock on this system goes several percent too slowly. I have tried all available timecounters (the default HPET, as well as ACPI-safe and i8254. TSC strangely says (-100) which might suggest it is not reliable on this system. The clock drift problem seems to be exactly the same with all timecounters. I have also tried setting kern.hz to 100 (in /boot/loader.conf) without any improvements. kern.timecounter.choice: TSC(-100) HPET(900) ACPI-safe(850) i8254(0) dummy(-1000000) Motherboard: ASUS M3A78-EMH HDMI CPU: AMD Phenom 9750 (2.4 GHz x 4) I have run FreeBSD for 13 years on countless systems and have never experienced clock drift problems with it. Could this be a hardware problem? >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200809182138.m8ILc75d083868>