Back on Friday we published Mac OS X 10.6 benchmarks and found
it to offer some terrific performance improvements, but at the same
time, there were a few notable regressions. Apple engineers have been
working hard at pushing technologies like Grand Central Dispatch (GCD),
OpenCL, full 64-bit support, and other changes to their OS X stack to
bolster its performance capabilities and reduce the overall footprint.
Now that we have tested Mac OS X 10.6, we are seeing how its performance
compares to that of Ubuntu Linux. Ubuntu 9.10 "Karmic Koala" will be out
in October and does have some performance improvements as our earlier
tests have shown, but Canonical engineers have not been exclusively
focusing on performance optimizations with this release. Can the Karmic
Koala outperform Snow Leopard? Yes and no.