trace is a comprehensive dynamic tracing facility for examining the behavior of both user programs and the operating system itself. With trace, you can collect data at strategic locations in your environment, referred to as probes. trace enables you to record such data as stack traces, timestamps, the arguments to a function, or simply counts of how often the probe fires. Because trace enables you to insert probes dynamically, you do not need to recompile your code. For more information on trace, see the Oracle Solaris 11.2 Dynamic Tracing Guide