kern/166549: [eventttimers] Clock stops ticking in some cases with new timer framework in 9

Maciej Suszko maciej at
Fri Jun 22 10:52:30 UTC 2012

Same behavior on my VPS (KVM-based):

Output of 'uname -a':
FreeBSD archeo 9.0-RELEASE-p1 FreeBSD 9.0-RELEASE-p1 #0: Tue May 22 12:46:09 CEST 2012     root at archeo:/usr/obj/usr/src/sys/ARCHEO  i386

Output of 'sysctl kern.timecounter':
Output of 'sysctl kern.eventtimer':
Output of 'dmesg -a':

Setting kern.eventtimer.periodic to 1 starts the clock again. When set
to 0 and clock is stopped, machine is fully accessed via SSH, which if
you going to restart is going to hang somehow. All timer-based actions
fail of course (cron is not running any tasks, sleep(1) lasts forever,
load average does not change etc.).
regards, Maciej Suszko.

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