Intermittent hangs in vmem_periodic()

[Davide Italiano]

>
> Thanks Gleb.
> I've removed DIAGNOSTIC and the problem is gone now.
>

JFYI, I hit this problem today as well. I don't think you really need
to disable DIAGNOSTIC completely in order to get rid of that.
I've noticed Peter Holm has recently committed a new sysctl that
allows you to selectively disable calls to vmem_check
(debug.vmem_check), which should (probably) help.

Thanks,

-- 
Davide

"There are no solved problems; there are only problems that are more
or less solved" -- Henri Poincare