Hello, Running top command with idlestat tool doesn't show any frequency information sometimes. I have run the program with the following command - #sudo idlestat --trace -t 5 -f /tmp/myoutput /usr/bin/top and it ended up with the following output where there is no frequency state information. The file "myoutput" doesn't have any cpu_frequency entry either. Total trace buffer: 153896 kB Log is 4.999488 secs long with 675 events clusterA@state hits total(us) avg(us) min(us) max(us) C6-SNB 163 4955450.00 30401.53 0.00 141946.00 cpu0@state hits total(us) avg(us) min(us) max(us) C1-SNB 1 912.00 912.00 912.00 912.00 C6-SNB 115 4996270.00 43445.83 67.00 211819.00 cpu0 wakeups name count irq040 eth0 50 cpu1@state hits total(us) avg(us) min(us) max(us) C1-SNB 3 10809.00 3603.00 27.00 10742.00 C6-SNB 62 4985746.00 80415.26 59.00 223952.00 cpu1 wakeups name count irq018 ata_piix 6 cpu2@state hits total(us) avg(us) min(us) max(us) C1-SNB 3 10800.00 3600.00 26.00 10745.00 C6-SNB 52 4986684.00 95897.77 5724.00 223957.00 cpu2 wakeups name count cpu3@state hits total(us) avg(us) min(us) max(us) C1-SNB 20 15123.00 756.15 121.00 10895.00 C6-SNB 47 4962591.00 105587.04 1.00 223950.00 cpu3 wakeups name count Does that mean processors spent all time in idle state and none in active state?