runocc.d - run queue occupancy by CPU. Uses DTrace. runocc.d This prints the dispatcher run queue occupancy by CPU each second. A consistant run queue occupancy is a sign of CPU saturation. The value is similar to that seen in "sar -q", however this is calculated in a more accurate manner - sampling at 1000 Hertz. Since this uses DTrace, only the root user or users with the dtrace_kernel privilege can run this command. Solaris stable.

Print %runocc by CPU every second, # runocc.d

CPU cpu ID

%runocc percent run queue occupancy, sampled at 1000 Hertz

Solaris Internals 2nd Ed, vol 2, CPU chapter

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