Re: Process state 'D' in linux

Posted by ErmanArslansOracleBlog on Jan 09, 2019; 9:22am
URL: http://erman-arslan-s-oracle-forum.124.s1.nabble.com/Process-state-D-in-linux-tp7057p7061.html

First of all, I m a Linux admin but I m not a kernel developer or Linux guru.

But still, I will try to answer your question.


The processes waiting with an uninterruptable sleep state (D state) , are included in the calculation of Linux Load average.

So, if you have D state processes, you can expect a high load average..

as for the CPU usage, it is hard to answer.
In my opinion,

D state process will not use CPU, but the thing that caused them to be in D state may use CPU..
Consider, a process is doing I/O and relevant device driver is entered an infinite loop.. So the process will be in D state, and the device driver will use cpu in the backend..