If I have a laptop, and I want to install an Ubuntu 11.04 on it, but disk performance would be an important thing, then how could I test the real differences between:
- not using encryption
- using luks/aes 128bit
- using luks/aes 256bit
So I would Install Ubuntu 3 times, I just not know how to do perf. test (good).
What programs/methods could be good for such io performance tests? (or it affects the CPU too? - software encryption! my cpu doesn't has aes-ni)
e.g.: I would install a minimal ubuntu iso, with no gui+run tests in single user mode