clock problem on Ultra80
dennis at pesonen.se
Sun Jan 30 00:39:00 PST 2005
Ever since I installed FreeBSD I have had some strange clock problems.
After installing FreeBSD 5.2.1 from iso files I noticed that doing
traceroutes and pings returned strange results. Sometimes the result was a
negative time and sometimes it was to large to be reasonable. After
changing the kern.timecounter.choice: parameter via sysctl from tick to
counter-timer these problems stopped.
My current problem is that the system clock stops from time to time. This
happes at intervals between 1 day and 2 weeks, but always at the top of
the hour, like 14:00:01. After it stops it just switches between 2
seconds, lika 14:00:01 and 14:00:02. This makes alot of processes hang and
I cant reboot the system without a powercycle
When this happens I have had a look at the time values in sysctl, what I
noticed is that kern.timecounter.ngetmicrotime and
kern.timecounter.ngetnanouptime stops counting up but
kern.timecounter.nbinuptime and kern.timecounter.nmicrouptime: is still
Im wondering if this might be a hardware falure or if it's some strange
bug. After the reboot the time is accurate again so the actual hardware
clock does not seem to have stopped.
My system is a Ultra80 with 2x450cpu and 1gig ram. I have not CVSupped
since the install.
bash-2.05b# uname -a
FreeBSD Fetast.fetband.net 5.2.1-RELEASE FreeBSD 5.2.1-RELEASE #0: Tue Feb
24 07:47:33 GMT 2004
root at bobbi.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC sparc64
Im kinda new to freebsd so if I have left any information out please say
I would be very grateful for any help you can give me.
Kind Regards Dennis Pesonen
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