SHAOJIE'S BOOK

Situation

It is all started with two confusing situation.

• I found out using ps aux | grep -v process_name, the process is in Sl+ state. But the cpu usage is not zero.
• watch "ps aux |grep 3496617" always show the same cpu usage percentage, which is very confusing beacause htop always show up-down value. and pidstat -p 3516617 show cpu% less than 100%.