Name: lock_debugtime
Type: STRING
Default-Value: NULL
Last-Modified: 3.1.4

A floating point number of seconds.  If set, time how long we wait for any
lock, and syslog the filename and time if it's longer than this value.  The
default of NULL means not to time locks.  This is implemented for fcntl(2)
locks and has no effect on flock(2) locks.
