> Frequency transition now occurs during the thread switching if the > cmt_utilization > of the power active domain think it's necessary. > It's(event-mode) much more sensitive than before(poll-mode), even "kstat | > grep > current_clock_Hz" is possible to trigger a frequency transition. So, now, > powertop > is more reliable to report the cpu frequency utilization.
The "P-states (frequencies)" statistic of powertop is showing four entries (996, 1328, 1660 and 1992 MHz on a C2D T7200), and I see either 100% at 996 Mhz, or 100% at 1992 MHz. That it doesn't use the 1328 and 1660 Mhz frequencies is already reported as bug 6808377 "event based CPUPM could leverage mid range speeds". But why is it always reporting a frequency usage split for 996 and 1992 MHz as 100% - 0% (or 0% - 100%) ? Somehow it doesn't make sense that in event-mode (according to powertop) the cpu is always running at the slowest (highest) speed during the 5 second powertop sample interval. -- This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list [email protected]
