sampleproc(1m) [osx man page]
sampleproc(1m) USER COMMANDS sampleproc(1m) NAME
sampleproc - sample processes on the CPUs. Uses DTrace. SYNOPSIS
sampleproc [hertz] DESCRIPTION
This program samples which process is on each CPU, at a particular configurable rate. This can be used as an estimate for which process is consuming the most CPU time. Since this uses DTrace, only users with root privileges can run this command. EXAMPLES
Sample at 100 hertz, # sampleproc Sample at 400 hertz, # sampleproc 400 FIELDS
PID process ID COMMAND command name COUNT number of samples PERCENT percent of CPU usage BASED ON
/usr/demo/dtrace/prof.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
sampleproc will sample until Ctrl-C is hit. SEE ALSO
dtrace(1M) version 0.70 Jun 09, 2005 sampleproc(1m)
Check Out this Related Man Page
fddist(1m) USER COMMANDS fddist(1m) NAME
fddist - file descriptor usage distributions. Uses DTrace. SYNOPSIS
fddist [-r|-w] DESCRIPTION
This prints distributions for read and write events by file descriptor, by process. This can be used to determine which file descriptor a process is doing the most I/O with. Since this uses DTrace, only users with root privileges can run this command. OPTIONS
-r reads only -w writes only EXAMPLES
Sample both read and write activity, # fddist Sample reads only, # fddist -r FIELDS
EXEC process name PID process ID value file descriptor count number of events BASED ON
/usr/demo/dtrace/lquantize.d DOCUMENTATION
DTrace Guide "Aggregations" 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
fddist will sample until Ctrl-C is hit. SEE ALSO
dtrace(1M) version 0.70 Jun 08, 2005 fddist(1m)