xcallsbypid.d - CPU cross calls by PID. Uses DTrace. xcallsbypid.d xcallsbypid.d reports the number of CPU cross calls by process name and process ID. Cross calls occur when a CPU requests another CPU to do work on it's behalf. A great number of these can be a burden on the system. Since this uses DTrace, only the root user or users with the dtrace_kernel privilege can run this command. Solaris stable - needs the sysinfo provider.

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

PID process ID

CMD process name

XCALLS number cross calls

See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with verbose descriptions explaining the output. xcallsbypid.d will sample until Ctrl-C is hit. Brendan Gregg [Sydney, Australia] mpstat(1m), dtrace(1M)