How to improve performance on events?

I was doing some performance tests with my library using a test plugin on a craftbukkit server with no plugins other then the test, server had 1gb of ram. My timings results:

PHP:

LibraryTest v1.0
    BlockPlaceEvent Time: 41130000 Count: 3 Avg: 13710000
    Total time 41130000 (0s)


After another test with 4gb of ram, the tests were worse (probably because i executed the command quicker).
Clearly extremely inefficient, Because of the loops. Which is why Im asking for help. I need to increase the efficiency in my library so that plugins using it don't experience lag.
The github is here -> https://github.com/milkywayz/TimerLib
All contributions are extremely welcome and absolutely appreciated.