The System Performance Monitoring function runs the following AIX commands for analyzing system performance:
sar - Reports overall system activity.
vmstat - Reports virtual memory statistics.
iostat - Reports input/output statistics.
The system maintains a series of counters that record system activities. This function extracts data from the counters, based on the sampling rate and number of samples you request. Collect this data over time to study system performance trends.
To monitor system performance using AIX:
From the System > System Programming > System Maintenance menu, select System Performance Monitoring to display the System Performance Monitoring screen.
Note: If prompted, log on to the character-based system.
The system populates the fields on the screen with default values.
In the Sampling Interval field, enter the amount of time between each sample.
In the Number of Samples field, enter the total number of samples to take.
The system populates the Total Sampling Time field by multiplying the values in the first two fields.
Use one of the following hot keys to run the function:
Begin - Starts the monitoring.
Sched - Schedules the monitoring to run at designated times.
Note: After you exit the Phantom Scheduler, use the Begin hot key on this screen to schedule the Phantom job.
See Also:
Monitoring the System Overview