Date: Mon, 12 Jan 2004 01:32:44 GMT From: bsdlists@masterplan.org (Jason George) To: freebsd-current@freebsd.org Subject: Re: `top` reports all CPU states as 0% on i386 Message-ID: <200401120132.i0C1WipO000427@f1.masterplan.org>
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>I think this problem is usually caused by one of the clock interrupts >stopping. Checking the output of "vmstat -i" can confirm this - check >for: > >clk irq0 1044322763 100 >rtc irq8 1352668148 129 > >The rate for the first one should 100 (Or possibly HZ, if you have >adjusted HZ). The rate of the second should be about 128, unless >things have got confused. > > David. Yikes! I think my RTC has left the building! > vmstat -i interrupt total rate irq1: atkbd0 1 0 irq6: fdc0 4 0 irq10: fxp0 xl0 86393 1 irq11: atapci0 255394 3 irq13: npx0 1 0 irq0: clk 8087632 99 Total 8429425 103 > Another point of interest is that about 8 months ago, I added kern.timecounter.hardware=i8254 to /etc/sysctl.conf because the system clock was going insane - it was counting off an hour of system time in the matter of a minute or so of wristwatch time. --Jason
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