hotuser - sample on-CPU user-level functions and libraries. hotuser [-hl] { -c command | -p PID } This samples the on-CPU function at 1001 Hertz, for a simple yet effective user-level profiling tool for sampling exclusive function time. The output will identify which function is on the CPU the most - which is the hottest. See Notes/ALLexclusive_notes.txt for an explanation of exclusive time. Solaris stable - Written using Perl and DTrace (Solaris 10 03/05)

Sample user functions from PID 81, # hotuser -p 81

Sample user libraries from PID 81, # hotuser -lp 81

Sample Xorg, # hotuser `pgrep -n Xorg`

See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with verbose descriptions explaining the output. hotuser will run until Ctrl-C is hit. Brendan Gregg [CA, USA] dtrace(1M), hotkernel(1M)