Here are the different values that the s, stat and state output specifiers (header "STAT" or "S") will display to describe the state of a process.
| CODE | Meaning |
|---|---|
| D | Uninterruptible sleep (usually IO) |
| R | Running or runnable (on run queue) |
| S | Interruptible sleep (waiting for an event to complete) |
| T | Stopped, either by a job control signal or because it is being traced. |
| W | paging (not valid since the 2.6.xx kernel) |