Question: All lines in my AppStats look like this: `real=19ms cpu=0ms api=0ms overhead=0ms`, it has the correct real time, but the other values are always 0. Anyone have this problem before or know how to fix this?

Answer: 
AFAIK this come from the C convention that you should return 0 if succeded.
See:

```
man close

```

Most of the C (POSIX) api is build like this.
<http://en.wikipedia.org/wiki/C_POSIX_library>
Maybe a good way to remember it is :

* Return codes answer "what's the answer?" true (or other result) or false
* Exit codes answer "what's the problem?" exit code or no problem (0)