I made a plugin to make servers a lot less laggy.
I used advanced methods of cleaning data that makes corrupt data unable to lag the server.
I also used advanced methods of loading only visable chunks while still loading mob spawners and mobspawning in invisable chunks.
Its as simple as putting it in your plugins folder and it will do its work.
It takes care of:
1. Lag machines.
2. Optimizes chunk loading.
3. Fixes corrupt data.
4. Optimizes data.