OpenVMS Cluster Systems - OpenVMS Systems - HP

Command Purpose
Maintaining an OpenVMS Cluster System
10.13 Cluster Performance
SHOW DEVICE/FILES Displays a list of the names of all files open on a volume and their
associated process name and process identifier (PID). The command:
SHOW
DEVICE/SERVED
• Lists files opened only on this node.
• Finds all open files on a disk. You can use either the SHOW
DEVICE/FILES command or SYSMAN commands on each node
that has the disk mounted.
Displays information about disks served by the MSCP server on the node
where you enter the command. Use the following qualifiers to customize
the information:
• /HOST displays the names of processors that have devices online
through the local MSCP server, and the number of devices.
• /RESOURCE displays the resources available to the MSCP server,
total amount of nonpaged dynamic memory available for I/O buffers,
and number of I/O request packets.
• /COUNT displays the number of each size and type of I/O operation
the MSCP server has performed since it was started.
• /ALL displays all of the information listed for the SHOW
DEVICE/SERVED command.
The SHOW CLUSTER command displays a variety of information about the
OpenVMS Cluster system. The display output provides a view of the cluster as
seen from a single node, rather than a complete view of the cluster.
Reference: The OpenVMS System Management Utilities Reference Manual
contains complete information about all the SHOW commands and the Show
Cluster utility.
10.13.2 Using the Monitor Utility
The following table describes using the OpenVMS Monitor utility to locate disk
I/O bottlenecks. I/O bottlenecks can cause the OpenVMS Cluster system to
appear to hang.
Maintaining an OpenVMS Cluster System 10–21