mozilla/browserid — comment on commit ef441617cbf020b21d91b989ca1d71c2f4590fa9
File: tests/stalled-mysql-test.js line 49
By lloyd:

oh no, it *is* voodoo. I'll add a line comment.

The daemons use `fs.watchFile()` which is set to poll tightly when os support for detecting when a path's existence changes. 300 is very generous, but I wanted to allow enough time so that even in a slow machine, or one under load, there would be a very slim chance that the drivers state wouldn't change in time for the tests.