OS: Lubuntu 14.04 64-bit
HW: i7-2620M, 16GB RAM
As building android on a laptop, the cpu frequency often scales within 4xx MHz and 2.x GHz. But I wish cpu to run at full speed to solve time for building. After digging google, I finally find the available way as below.
1. Get "acpi-cpufreq" driver. sudo apt-get update
sudo apt-get install acpi-support acpid acpi

