linux thread priority and nice value

最近在研究 process priority and nice value
下面這篇文章解釋的很詳細
http://loda.hala01.com/2009/04/linux-2426-%E6%A0%B8%E5%BF%83%E6%8E%92%E7%A8%8B%E6%A9%9F%E5%88%B6%E5%89%96%E6%9E%90/