OpenSolaris vs. Linux Kernel Benchmarks Written by Michael Larabel in Operating Systems on 14 May 2009 at 03:00 AM EDT. Page 1 of 9. 27 Comments. Earlier this week we delivered benchmarks of Ubuntu 9.04 versus Mac OS X 10.5.6 and found that the Leopard operating system had performed better than the Jaunty Jackalope in a majority of the tests, at least when it came to Ubuntu 32-bit. We are back wit