Hi, First of all I would like to thank for the cpufreq utility that I use regularly. Unfortunately, when upgrading our systems from Ubuntu 12.04 to 13.10, we are encountering some issues with the data in /sys/devices/system/cpu/cpu*/cpufreq/stats/time_in_state. On some of the machines, the values are all set to 0 [1], whereas on other machines, values are 0 or very small [2]. In both cases, the output of cpufreq-info for the cpufreq stats is not correct. When running Ubuntu 12.04, we get reasonable values. We noticed this behavior on Intel i3 machines, and on Intel Xeon. Kernel version in all cases is 3.11.0-20-generic. Thanks in advance and best regards, Mascha --- [1] user@ubuntu1310:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state 3100000 0 2800000 0 2600000 0 2400000 0 2200000 0 2000000 0 1800000 0 1600000 0 user@ubuntu1310:~$ cpufreq-info ... cpufreq stats: 3.10 GHz:-nan%, 2.80 GHz:-nan%, 2.60 GHz:-nan%, 2.40 GHz:-nan%, 2.20 GHz:-nan%, 2.00 GHz:-nan%, 1.80 GHz:-nan%, 1.60 GHz:-nan% (21768) ... [2] user@ubuntu1310:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state 3100000 0 2800000 0 2600000 0 2400000 0 2200000 0 2000000 0 1800000 0 1600000 6 user@ubuntu1310:~$ cpufreq-info ... cpufreq stats: 3.10 GHz:0.00%, 2.80 GHz:0.00%, 2.60 GHz:0.00%, 2.40 GHz:0.00%, 2.20 GHz:0.00%, 2.00 GHz:0.00%, 1.80 GHz:0.00%, 1.60 GHz:100.00% (86356) ... -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
