NAME

       pstack - print a stack trace of running processes

SYNOPSIS

       pstack pid [...]

DESCRIPTION

       pstack  attaches  to  the  active  processes  named  by  the  pids on the command line, and prints out an
       execution stack trace, including a hint at what the function arguments are.   If  symbols  exist  in  the
       binary (usually the case unless you have run strip(1)), then symbolic addresses are printed as well.

       If  the  process  is  part  of  a  thread group, then pstack will print out a stack trace for each of the
       threads in the group.

RESTRICTIONS

       pstack currently works only on Linux, only on an x86 machine running 32 bit  ELF  binaries  (64  bit  not
       supported).  Also, for symbolic information, you need to use a GNU compiler to generate your program, and
       you can't strip symbols from the binaries.  For thread information to be dumped,  you  have  to  use  the
       debug-aware  version  of  the  LinuxThreads libpthread.so library.  (To check, run nm(1) on your pthreads
       library, and make sure that the symbol "__pthread_threads_debug" is defined.)  Threads are not  supported
       with the newer NPTL libpthread.so library.

SEE ALSO

       nm(1), ptrace(2)

AUTHORS

       Ross Thompson <ross@whatsis.com>

       Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>