[from port's pkg-descr] "pstack" is a workalike for the Solaris program of the same name. Running pstack on a process or core file produces a stack trace of each thread in that process.
lsstack is a Linux implementation of the "pstack" utility from Solaris
lsstack is a command line utility which (efficiently and quickly) prints the call stacks for all threads in a specified process,
with symbolic names for functions, where symbols ar