How is performance impacted by whole disk encryption systems such as PGP or LUKS?
How do PGP and LUKS compare in performance?
Im working on Ubuntu 10.10
Whole disk encryption doesn't put more load on the hard drive. The extra load comes from encrypting/decrypting the data which is done by the CPU.
In my experience, not using either of the above products, most operations didn't have a significant end user perceived performance penalty but did incur a bit more CPU load (~ %10) than the same operations without encryption.