cpuwalk.d(1m) [mojave 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)

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

NAME

       syscallbypid.d - syscalls by process ID. Uses DTrace.

SYNOPSIS

       syscallbypid.d

DESCRIPTION

       This  reports  the  number  of  each  type of system call made by PID.  This is useful to identify which process is causing the most system
       calls.

       This is based on a script from DExplorer.

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

EXAMPLES

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

FIELDS

       PID    process ID

       CMD    process name

       SYSCALL
	      system call name

       COUNT  number of system calls made in this sample

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

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

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       procsystime(1M), dtrace(1M), truss(1)

version 1.00							   Jun 28, 2005 						syscallbypid.d(1m)