Clocksource tsc unstable
Hi,
I'm running Debian Lenny stable on an AMD64 processor (Athlon X2) on an Asus M2A-VM motherboard. We use the machine as a server for our website. We had a lot of instability issues (every few days the kernel locked up in a hard panic which required a manual reset of the system) before the upgrade to Lenny. I already ran memtest86+ for 48 hours without any error so i guess the memory isn't corrupt. Since I installed lenny, i'm getting a new error in the dmesg output: [ 2494.398691] Clocksource tsc unstable (delta = 62507982 ns) after it has run for about half an hour. It keeps running but it locks up again after a week or two, and a lot of kernel Oops'es (which can be seen in the kernel.log file). The clocksource message is reproducible every half an hour after boot, reason unknown. I have been looking up a lot of information and forums on this matter but i can't seem to find what's wrong. In the kernel.log file, when an Oops occurs, there is an error for one specific Perl script that renders a page on the website, something i haven't seen before in the logs. What I have attempted so far: - installed the latest BIOS version - Linux version 2.6.26-1-amd64 (Debian 2.6.26-13) (waldi@debian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 4.1.2-24)) #1 SMP Sat Jan 10 17:57:00 UTC 2009 - Code:
cat /sys/devices/system/clocksource/clocksource0/available_clocksource Code:
cat /sys/devices/system/clocksource/clocksource0/current_clocksource - i haven't tried enabling or disabling kernel boot options yet. Can someone give me any help on this? Thanks! |
Hi
Try adding the following option to your kernel line in the boot loader: clocksource=hpet The message "tsc unstable" still appears on boot up. But the boot process doesn't hang any more after the message. In more detail, if you use grub: Edit /boot/grub menu.lst find the line ## ## End default Options ## ## Just after this line, the first boot option should appear. On the line starting with kernel, add clocksource=acpi_pm at the end. Looks like this on my system: Code:
title Debian GNU/Linux, kernel 2.6.26-2-amd64 |
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