CPU time accounting broken on 8-STABLE machine after a few
hours of uptime
truckman at FreeBSD.org
Thu Sep 30 13:14:07 UTC 2010
On 30 Sep, Andriy Gapon wrote:
> on 30/09/2010 02:27 Don Lewis said the following:
> vmstat -i ?
I didn't see anything odd in the vmstat -i output that I posted to the list
earlier. It looked more or less normal as the ntp offset suddenly went
>> I did manage to catch the problem with lock profiling enabled:
>> I'm currently testing SMP some more to verify if it really avoids this
I wasn't able to cause SMP on stable to break.
The silent reboots that I was seeing with WITNESS go away if I add
WITNESS_SKIPSPIN. Witness doesn't complain about anything.
I tested -CURRENT and !SMP seems to work ok. One difference in terms of
hardware between the two tests is that I'm using a SATA drive when
testing -STABLE and a SCSI drive when testing -CURRENT.
At this point, I think the biggest clues are going to be in the lock
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