threaded.d - sample multi-threaded CPU usage. Uses DTrace. threaded.d This measures thread IDs as a process runs across multiple CPUs. It is a simple script that can help determine if a multi-threaded application is effectively using it's threads, or if the threads have serialised. See the example file in Docs/Examples/threaded_example.txt for a demonstration. Since this uses DTrace, only the root user or users with the dtrace_kernel privilege can run this command. Any stable.

This runs until Ctrl-C is hit. # threaded.d

PID process ID

CMD process name

value thread ID

count number of samples

prstat -L

See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with verbose descriptions explaining the output. threaded.d will run until Ctrl-C is hit. dtrace(1M)