HP NonStop G-Series - Manual (Page 22)

Introduction to Measure
Measure User’s Guide — 520560-003
1 -2
Continuous Operation and Measurement
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HP NonStop Transaction Management Facility (TMF) transactions
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User-defined processes
You select the resources to measure and the time frame for data collection. You can
include any combination of measurable resources in a measurement configuration.
You can start or stop measurements at any time.
The Measure performance monitor’s predefined counters give a comprehensive
picture of each resource’s performance characteristics. In addition, you can set up
user-defined counters to measure application-specific performance parameters.
While a measurement runs, you can access and display performance data in system
counter space or in the measurement data file. After a measurement ends, you can
access and display the performance data in the measurement data file. You can then:
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Display data from active and inactive measurements as basic reports, plots, or bar
graphs, depending on the reporting options you select
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Copy the data from a measurement data file to a structured file and create
performance databases
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Generate more complex performance reports using the Enform query product or
the HP NonStop SQL/MP Report Writer
Continuous Operation and Measurement
The Measure performance monitor’s low overhead makes continuous monitoring
feasible. Multiple users can run up to 64 measurements concurrently without starting
and stopping the Measure subsystem to do so.
Measurements are taken online in real time. If resources are specified for
measurement and become active after a measurement has started, those resources
are automatically included in the count. When the same resource is designated in more
than one measurement, the data (counter) record for the resource specified in the first
measurement is shared by the second and subsequent measurements.
The Measure performance monitor works with the operating system to determine
whether processors selected for measurement or being measured are up or down. If a
processor being measured halts during a measurement, the Measure monitoring
process automatically reactivates measurement activity in that processor when it is
reloaded.
Measurable Resources
The resources for which data is collected are called entity types. They include:
CLUSTER DISCOPEN OPDISK SERVERNET TMF
CONTROLLER DISKFILE OSSCPU SQLPROC USERDEF