Phoronix posted a performance comparison between Ubuntu 11.10 and Mac OS X 10.7.2 Performance
After delivering benchmarks last week that were comparing the Intel Sandy Bridge performance of Mac OS X 10.7 "Lion" vs. Ubuntu 11.10 "Oneiric Ocelot" when it came to the Sandy Bridge OpenGL graphics performance, here's a comparative look at the performance of Ubuntu 11.10 against Mac OS X 10.7.2 from the Intel Sandy Bridge-based Mac.Ubuntu 11.10 vs. Mac OS X 10.7.2 Performance