In this tutorial I will describe, how to use nmon (Nigel’s performance Monitor) to monitor performance data in the interactive mode or in the capture mode.
nmon can display / capture the following performance data
- CPU utilization
- Memory use
- Kernel statistics and run queue
- Disks I/O rates, transfers, and read/write ratios
- File systems size and free space
- Disk adapters
- Network I/O rates, transfers, and read/write ratios
- Paging space and paging rates
- Machine details, CPU and OS specification
- Top processors
- User defined disk groups
- Asynchronous I/O – AIX only
- Workload Manager – AIX only
- ESS and other disk subsystem – AIX only
- Dynamic LPAR changes …