check_afs_rpc is a Nagios plugin for checking AFS
file servers to see if there are client
connections waiting for a free thread. If there
are more than a few of these, AFS performance
tends to be very slow; this is a fairly reliable
way to catch overloaded file servers. By default,
check_rxdebug returns a critical error if there
are more than eight connections waiting for a free
thread, and a warning if there are more than two.
These thresholds can be changed with the
--critical and --warning options. check_afs_rpc
will always print out a single line of output
including the number of blocked connections, and
displaying whether this is critical, a warning, or
okay.
