Added info on governors and io schedulers in OP:
Here's a link to a pretty good description of what seems to be most or all of the known available governors and IO schedulers in use in Android kernels by knzo at xda:
http://forum.xda-developers.com/showthread.php?t=1242323
His summary:
To sum up:
(in my (knzo's) humble opinion)
- Battery: 1st place - InteractiveX | 2nd place - Smartass | 3rd place - SavagedZen
- Performance: 1st place - Minmax | 2nd place - Smartass2 | 3rd place - SavagedZen
IO Scheduler:
To sum up:
(in my (knzo's) humble opinion)
- Performance: 1st place - VR
- Reliability: 1st place - Simple