On Saturday 19 November 2005 02:16 pm, Uwe Doering wrote: > John Baldwin wrote: > > On Friday 18 November 2005 10:05 pm, Charles Sprickman wrote: > >>I tried this query on -stable, hoping someone here can help me further > >>understand and troubleshoot this. > >> > >>Reference: > >>http://thread.gmane.org/gmane.os.freebsd.stable/32837 > >> > >>In short, top, ps report 0% CPU on all processes as of a few weeks ago. > >>"systat -vmstat" hands out the "Alternate system clock has died" error. > >> > >>Box is running 4.8-p24 and has been up 425 days. Nothing out of the > >>ordinary except for the above symptoms. In searching the various > >>lists/newsgroups, it seems that the other folks with this problem have > >>fixed it in various ways: > >> > >>-early 4.x users referenced a PR that was committed before 4.8 > >>-some 5.3 users reported this with unknown resolution/cause > >>-sending init a HUP was suggested (tried it, no luck) > >>-setting kern.timecounter.method: 1 (tried it, no luck) > >>-one user seemed to actually have a dead timer > > > > Actually, there was a patch that was committed in 5.4 and 6.0 for this > > issue. You can see the diff here: > > > > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/isa/clock.c.diff?r1=1. > >213&r2=1.214&f=h > > > > That patch would probably backport to 4.x fairly easily. > > I just looked at RELENG_4, and yes, backporting should be easy. Though > I haven't tried it yet on our machines. > > I wonder, however, what's writing to the RTC on a running server. Could > this event perhaps have been triggered by the recent Daylight Saving > Time switch?
Yep. Also, if you are using ntp, then the adjustments to the time are getting pushed back to the RTC as well. -- John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
