Expand Configuration and Management Manual (H06.21+, J06.10+)

Tuning
Expand Configuration and Management Manual — 529522-013
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Measuring and Mapping an Expand Network
Measuring and Mapping an Expand Network
Effective network tuning must begin with an accurate picture of the network and its
significant traffic. All networks are fully defined topologically by their nodes and links.
Network traffic is fully defined by the intensity of the traffic, the service times of the
working components, and the capacities of passive resources such as buffers and
queues. These parameters can all be measured by HP utilities.
Because it is not always feasible to define every network fully, your first task is to
create a working definition of a subnetwork adequate to serve tuning goals. HP
provides several tools for building this model:
•
Subsystem Control Facility (SCF). Provides a good view of long-term network
behavior. The SCF interface to the Expand subsystem is described in Section 14,
Subsystem Control Facility (SCF) Commands.
•
Measure. Can be used to make a detailed study of a particular node’s Expand line-
handler processes and paths and short-term network traffic intensity. Measure is
described in the Measure User’s Guide.
•
Enform. Can be used for data reduction that can be analyzed by proprietary tools
on the Integrity NonStop NS-series server or can be used with analytical or
simulation tools elsewhere. The Enform optimizer can be used to produce charts
such as those shown later in this section. ENFORM is described in the Enform
Reference Manual and Enform User’s Guide.
•
Availability Statistics and Performance (ASAP)
•
The Availability Statistics and Performance (ASAP) monitoring tool provides
graphical and tabular displays of system and network object performance, object
state, and entity threshold information. The Availability Statistics and Performance
Extension (ASAPX) product integrates and extends ASAP monitoring capabilities
to single and multi-node application environments. For more information on ASAP,
see these manuals: ASAP Client Manual, ASAP Server Manual, ASAP Extension
Manual, and ASAP Migration Guide for NSX and OMF Users.
What the Utilities Show
Virtually all the information needed to model and tune an Expand network can be
gathered by SCF and Measure.
SCF is specifically designed to monitor network components. SCF is adequate to map
the topology of any Expand network, but it is not designed to define the traffic
completely.
Measure is a general-purpose measuring tool that report
s details on the performance
of several Expand components.