ewxrjk/nps — Issue #1: Stupid RD/WR output
Author: ewxrjk
Created: 2011-11-21 16:03:49+00:00
State: open

Seen in 'top' output:
```
USER PID NI PSS RSS SWAP %C RD WR TTY CMD
rjk 17836 0 0 12948 0 0 -13627748 -13627748 pts/6 [python]
```

I've seen something like this before but not managed to capture it until now.

In this case the proximate cause is obviously that the process terminated at the 'wrong' moment.

In other cases I speculate that the cause may be overflow in some calculation, or (perhaps) a consequence times and samples being retrieved at ever-so-slightly different times.