CPU load 和 CPU utilization

load的含义 

http://linuxtechsupport.blogspot.com/2008/10/what-exactly-is-load-average.html

http://smilejay.com/2014/06/cpu-utilization-load-in-linux-system/ 

“Without getting into the vagaries of every Unix-like operating system in existence, the load average more or less represents the average number of processes that are in the running (using the CPU) or runnable (waiting for the CPU) states. One notable exception exists: Linux includes processes in uninterruptible sleep states, typically waiting for some I/O activity to complete.”

running state 和 runnable state 有什么区别？

uninterruptible sleep states 和不同的sleep state有什么区别？