This section reports the lock manager metrics collected from OpenVMS performance statistics. This report contains three columns: Local, In and Out. Each of these columns report rates for a variety of lock manipulation requests, such as New ENQ, Converted ENQ, and DEQ.
Rates for locking information are:
Lock manipulation requests made at the local node for the benefit of that node.
Lock manipulation requests coming to the local node from other nodes in a cluster.
Lock manipulation requests being sent from the local node to other nodes in the cluster.
Lock manipulation requests are:
The number of new locks requested (enqueued) per second.
The number of lock conversion requests per second.
he number of locks released (dequeued) per second.
The number of blocking ASTs received per second. Use of blocking ASTs allows a process to lock a resource and then release it only when another process requests that resource. When another process requests a lock on the resource, a blocking AST is delivered to the process currently holding the lock.
The number of messages per second for directory operations. There are three categories: the rate for lookups in a directory, the rate for inserts in a directory, and the rate for deletes from a directory.
The number of messages per second required for deadlock detection.
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