On servers where used unix sockets, sometimes thread taskq start to eat 100% 
CPU:
http://docs.FreeBSD.org/cgi/mid.cgi?474EFC5C.9060508

Addition info about this problem - when this occurs

sysctl net.local.inflight show negative number.

% sysctl net.local.inflight
net.local.inflight: -3

And this condition become always true:

if (local_unp_rights)
                taskqueue_enqueue(taskqueue_thread, &unp_gc_task);

It seems, that unp_rights decremented more often than incremented, or some race 
exist.

--
 Anton Yuzhaninov
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