[Samsung Galaxy Nexus] büscher:
for me the gpu is no problem becuase I don't need my phone to play games. I normally have it @ 307 or @ 384.

For the nightmare governor i just found these values:

hotplug_freq_2_1

hotplug_freq_3_0

hotplug_freq_3_1

hotplug_freq_4_0

hotplug_rq_2_1

hotplug_rq_3_0

hotplug_rq_3_1

hotplug_rq_4_0

and they are stated for quad core devices. maybe they are just there and not used.

I also tweaked nightmare to some experimental settings I think are good for our device.

echo "12" > /sys/devices/system/cpu/cpufreq/nightmare/cpu_down_rate
echo "8" > /sys/devices/system/cpu/cpufreq/nightmare/cpu_up_rate
echo "50" > /sys/devices/system/cpu/cpufreq/nightmare/dec_cpu_load
echo "30" > /sys/devices/system/cpu/cpufreq/nightmare/down_avg_load
echo "0" > /sys/devices/system/cpu/cpufreq/nightmare/dvfs_debug
echo "700000" > /sys/devices/system/cpu/cpufreq/nightmare/freq_for_responsiveness
echo "20" > /sys/devices/system/cpu/cpufreq/nightmare/freq_step
echo "15" > /sys/devices/system/cpu/cpufreq/nightmare/freq_step_dec
echo "5" > /sys/devices/system/cpu/cpufreq/nightmare/freq_up_brake
echo "1" > /sys/devices/system/cpu/cpufreq/nightmare/hotplug_compare_level
echo "701000" > /sys/devices/system/cpu/cpufreq/nightmare/hotplug_freq_1_1
echo "525000" > /sys/devices/system/cpu/cpufreq/nightmare/hotplug_freq_2_0
echo "0" > /sys/devices/system/cpu/cpufreq/nightmare/hotplug_lock
echo "175" > /sys/devices/system/cpu/cpufreq/nightmare/hotplug_rq_1_1
echo "175" > /sys/devices/system/cpu/cpufreq/nightmare/hotplug_rq_2_0
echo "0" > /sys/devices/system/cpu/cpufreq/nightmare/ignore_nice_load
echo "75" > /sys/devices/system/cpu/cpufreq/nightmare/inc_cpu_load
echo "50" > /sys/devices/system/cpu/cpufreq/nightmare/inc_cpu_load_at_min_freq
echo "0" > /sys/devices/system/cpu/cpufreq/nightmare/io_is_busy
echo "0" > /sys/devices/system/cpu/cpufreq/nightmare/max_cpu_lock
echo "0" > /sys/devices/system/cpu/cpufreq/nightmare/min_cpu_lock
echo "1" > /sys/devices/system/cpu/cpufreq/nightmare/sampling_down_factor
echo "20000" > /sys/devices/system/cpu/cpufreq/nightmare/sampling_rate
echo "10000" > /sys/devices/system/cpu/cpufreq/nightmare/sampling_rate_min
echo "1" > /sys/devices/system/cpu/cpufreq/nightmare/sampling_up_factor
echo "60" > /sys/devices/system/cpu/cpufreq/nightmare/up_avg_load
echo "1" > /sys/devices/system/cpu/cpufreq/nightmare/up_nr_cpus

but I will test them some more and give feedback later this day.

for now the kernel runs great! and with these values I didn't have reboots until now.

Some settings have strange values on stock. Eg:

max_cpu_lock: 598000 where it should be 0, 1 or 2

min_cpu_lock: 364000 where it should be 0, 1 or 2

inc_cpu_load_at_min_freq: 190000 where it should be something from 1 to 100

according to some xml I found while searching for descriptions of these tunables. I hope these settings also apply to our nightmare governor..?

but all in all #14-beta4 is very smooth. Can't say much about battery life atm.

edit: the above settings hotplug OUT cpu1 at 525MHz and Hotplug it IN at 701MHz. so at 700MHz max screen off it only gets hotpluged IN if load hits up_avg_load @ 60%. So at screen off cpu1 should be shut down most of the time.