Yet another interesting FlagDay: PSARC/2008/376 - PowerTOP for OpenSolaris
Another interesting feature found it´s way to Opensolaris. It had its flag-day yesterday evening:
PowerTOP is an observability tool that shows you how well the system is taking advantage of the CPU's power management features and reports on the activity that is causing the system to wake up and go to higher energy consumption levels. [...] The tool uses DTrace sdt probes integrated into snv_82, so it requiressnv_82 or higher. Because it uses DTrace, a user must have DTrace privileges (dtrace_user, dtrace_proc, dtrace_kernel) in order to run PowerTOP.
You can find additional information on the website of the project.