DragonFly On-Line Manual Pages

Search: Section:  

PCTRACK(8)             DragonFly System Manager's Manual            PCTRACK(8)


NAME

     pctrack -- print kernel system/interrupt PC sampling history


SYNOPSIS

     pctrack [-fnsi] [-c cpu] [-N execfile] [-M corefile] [interval]


DESCRIPTION

     Kernels compiled with DEBUG_PCTRACK record the program counter (PC) of
     the code interrupted by the statistics clock interrupt.  This information
     can be dumped with the pctrack utility

     The following options are available:

     -c cpu       Specify which CPU to dump.  If not specified, all CPUs will
                  be dumped.

     -f           If a single CPU and either -i or -s is specified, this
                  option will use the repeat interval to detect changes and
                  dump them as they occur.

     -i           Dump the interrupt tracking buffer.

     -s           Dump the kernel tracking buffer.  If neither -i or -s is
                  specified, both tracking buffers will be dumped.

     -n           pctrack normally tries to translate the PC into symbols.
                  This option forces hex values to be displayed instead.

     -N execfile  The kernel image to resolve symbols from.  The default is
                  the value returned via getbootfile(3).

     -M corefile  The core file or memory image to read from.  The default is
                  /dev/mem.


HISTORY

     The pctrack utility first appeared in DragonFly 1.5.


AUTHORS

     The pctrack utility was originally implemented by Matthew Dillon for
     DragonFly.

DragonFly 3.5                    June 8, 2006                    DragonFly 3.5

Search: Section: