ASAP 2.8 Server Manual

Introduction to Availability Statistics and

Performance (ASAP)

HP NonStop ASAP Server Manual—522303-007

1-11

Collection

The Database Collector is a process pair that collects application and system

availability information from system nodes throughout the network. Availability

information records from remote monitors and SGPs throughout the network are

received by the ASAP Collector process, which stores the data in the normalized

ASAP database.

User-defined partitions let multiple volumes share the I/O workload.

Node Monitors

Each monitored node in the network has a Monitor process pair running in it. The

Monitor starts individual SGPs based on user criteria for each SGP. If the SGP CPU

becomes unavailable after starting, the monitor restarts the SGP in an available CPU.

Statistics Gathering Processes

Each CPU on the monitored node has at least one Statistics Gathering Process (SGP)

executing in it provided that monitoring is turned on, or auto discovery was used. This

SGP process determines CPU availability and busiest Process information and then

sends these availability records to the Collector process. When at least one CPU on

the node is monitored, system availability information is collected. System availability is

the average availability statistics for all monitored CPUs on the node.

Application Statistics Gathering Process

The application SGP collects customer application service-level metrics from

application monitor processes for tracking productivity, performance, and availability of

the applications. These service-level metrics are automatically evaluated against

predefined objectives for establishing alert priorities, letting system operators and

administrators quickly identify service-level issues that are not meeting the defined

objectives for an application process. This SGP, the ASAPX Monitor processes, the

ASAPX CI, and the ASAPX Library are all part of the optional product ASAPX.

COMM Statistics Gathering Process

Communication SGPs collect availability for all communication lines configured on the

node or only user-specified communication lines on the node. This process uses the

Measure subsystem programmatic interface for collecting raw communication

performance counters. The COMM SGP reports on objective thresholds that exceed

the user-defined values maintained in the objectives database.

The COMM SGP gathers availability information, bundles it in a single message, and

forwards it to the ASAP Collector process. The Collector process unpacks the

information and stores it in the normalized ASAP database so the ASAP COMM

command or ASAP client can retrieve it.