HP Integrity NonStop J-Series - Manual (Page 129)

Guardian Performance Analyzer (GPA) User Guide
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GPA
The program module that performs the system analysis.
index level
In a key-sequenced file, the B-tree structure for minimizing access time consists of one or
more index levels.
MEASCOM
The command interface used to access Measure.
MEASFH
A Measure file handler process that builds counter records from the data in the
measurement data file.
Measure
The NonStop system performance monitoring product.
message
Information sent by one process to another process. This may be a request for service or
data.
net messages
A measure of the effective workload for a disk subprocess. Messages that do not
constitute “work” from a performance point of view are subtracted from the total
messages to obtain a meaningful number. For example, messages associated with
queue management are not considered to be performing work and are subtracted from
the net message value.
node swap rate
The total number of page swaps per second taking place on all the processors on a
system.
page swap
The transfer by a CPU of a page of data or code from disk to memory.
PCB
A Process Control Block is a data area in a CPU dedicated to the control of process
execution.