> It might be possible to make the parameters dynamic, for example
> using
> the system loads. But I'm not really interested to invest too much time
> on optimizing the timing parameters for buildbots. I would like to
> ensure that tests pass with a short "test sleep" on my PC. For example,
> it looks weird to check that a sleep of 500 ms takes less 1.5 seconds:
> why not testing that the sleep takes less than 600 ms?

Because it's too tight for some systems.