ASAP 2.8 Server Manual

Introduction to Availability Statistics and
Performance (ASAP)
HP NonStop ASAP Server Manual—522303-007
1-12
CPU Statistics Gathering Process
CPU Statistics Gathering Process
The remote ASAP Monitor starts the CPU SGP in each CPU of the monitored node.
CPU SGPs are responsible for gathering CPU-level statistics, including CPU
performance metrics, Operational state, and information about the busiest processes in
their CPU.
The CPU SGPs reports CPU-level information to the ASAP Monitor process. The
Monitor bundles it in a single message and forwards it to the ASAP Collect process on
the main Collection node. The Collect process parses this information and stores it in
the normalized ASAP database. You can then display the data with the ASAP CPU and
PROCESSBUSY commands, or with various block-mode or workstation programs.
Disk Statistics Gathering Process
Disk SGPs collect disk availability information for all non-phantom disks on the node.
These processes use the Measure subsystem programmatic interface for collecting
raw disk process counters. They do not use the Measure subsystem for determining
performance counters, disk capacity utilization, or operational state information. The
Disk SGP reports on objective thresholds when they do not meet the user-defined
values.
The Disk SGP gathers availability information, bundles it in a single message, and
forwards it to the ASAP Collect process. The Collect process unpacks the information
and stores it in the normalized ASAP database so the ASAP DISK command or ASAP
Client can retrieve it.
Expand Statistics Gathering Process
Expand SGPs collect Expand availability information for all Expand lines on the node.
These processes use the Subsystem Programmatic Interface (SPI) for communicating
with the Expand Manager. The Expand SGP reports on objective thresholds when they
do not meet the user-defined values.
The Expand SGP gathers availability information, bundles it in a single message, and
forwards it to the ASAP Collect process. The Collect process unpacks the information
and stores it in the normalized ASAP database so the ASAP LH command or ASAP
Client can retrieve it.
File Statistics Gathering Process
File SGPs collect file availability information. You define which files or subvolumes the
File SGP monitors. File availability information is obtained using the Guardian API. The
File SGP reports on objective thresholds when they do not meet the user-defined
values.
File monitoring in ASAP 2.5 has been enhanced to provide logical grouping of files,
aggregation of file domains, and the ability to restrict the historical database to contain
only aggregate records for certain file groups.