Java Call Stacks and Machine Call Stacks

The performance tools collect their data by recording events in the life of each Solaris LWP or Linux thread, along with the call stack at the time of the event. At any point in the execution of any application, the call stack represents where the program is in its execution, and how it got there. One important way that mixed-model Java applications differ from traditional C, C++, and Fortran applications is that at any instant during the run of the target there are two call stacks that are meaningful: a Java call stack, and a machine call stack. Both call stacks are recorded during profiling, and are reconciled during analysis.