cpuwalk.d(1m) [osx man page]

cpuwalk.d(1m)							   USER COMMANDS						     cpuwalk.d(1m)

NAME

       cpuwalk.d - Measure which CPUs a process runs on. Uses DTrace.

SYNOPSIS

       cpuwalk.d [duration]

DESCRIPTION

       This program is for multi-CPU servers, and can help identify if a process is running on multiple CPUs concurrently or not.

       A duration may be specified in seconds.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       this runs until Ctrl-C is hit,
	      # cpuwalk.d

       run for 5 seconds,
	      # cpuwalk.d 5

FIELDS

       PID    process ID

       CMD    process name

       value  CPU id

       count  number of samples (sample at 100 hz)

DOCUMENTATION

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       cpuwalk.d will run until Ctrl-C is hit, or the duration specified is reached.

SEE ALSO

       threaded.d(1M), dtrace(1M)

version 0.90							   Sep 22, 2005 						     cpuwalk.d(1m)

pridist.d(1m)							   USER COMMANDS						     pridist.d(1m)

NAME

       pridist.d - process priority distribution. Uses DTrace.

SYNOPSIS

       pridist.d

DESCRIPTION

       This  is  a  simple  DTrace  script  that samples at 1000 Hz which process is on the CPUs, and what the priority is. A distribution plot is
       printed.

       With priorities, the higher the priority the better chance the process (actually, thread) has of being scheduled.

       This idea came from the script /usr/demo/dtrace/profpri.d, which produces similar output for one particular PID.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       This samples until Ctrl-C is hit.
	      # pridist.d

FIELDS

       CMD    process name

       PID    process ID

       value  process priority

       count  number of samples of at least this priority

BASED ON

       /usr/demo/dtrace/profpri.d

DOCUMENTATION

       DTrace Guide "profile Provider" chapter (docs.sun.com)

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       pridist.d will sample until Ctrl-C is hit.

SEE ALSO

       dispadmin(1M), dtrace(1M)

version 0.90							   Jun 13, 2005 						     pridist.d(1m)