It seems that one core goes into "performance" state instead of ondemand.
cat /sys/devices/system/cpu/*/cpufreq/*cat /sys/devices/system/cpu/*/cpufreq/* 0 2000000 2000000 1000000 2000000 1667000 1333000 1000000 userspace powersave ondemand conservative performance 1000000 centrino userspace 2000000 1000000 1000000 cat: /sys/devices/system/cpu/cpu0/cpufreq/stats: Is a directory 1 2000000 2000000 1000000 2000000 1667000 1333000 1000000 userspace powersave ondemand conservative performance 2000000 centrino performance 2000000 1000000 -- Guidance Power Managment and Speedstep https://launchpad.net/bugs/68191 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
