prstat

On Solaris the prstat command displays information about active processes on the system. By default, prstat displays information about all processes sorted by CPU usage.

cpusar and mpsar

On multiprocessor machines, cpusar reports per-CPU statistics, and mpsar reports system-wide statistics.

Kstat

Kstat reports many kernel parameters and statistics.

lockstat

The lockstat utility gathers and displays kernel locking and profiling statistics. It allows you to identify what are the processes and kernel really doing. Lockstat allows you to specify which events to watch, how much data to gather for each event, and how to display the data.

SE Toolkit

The SE Toolkit is a collection of scripts for performance analysis that gives advice on performance improvements.