Windows 11 Better Than Linux Right Now For Intel Alder Lake Performance

Another Linux issue that became clear across the running of the many benchmarks was the much higher run-to-run variance as shown on the graphs. Under Linux the run-to-run variance is much higher than what we are used to seeing and was much greater than with Windows 11. With the default Phoronix Test Suite behavior of when the standard deviation between the normal run count (usually 3~5) exceeds 2.5%, additional runs will happen up to a factor of 5x before bailing out. In the case of this testing for Alder Lake on Linux, many of these benchmarks were running 15~20 times and still exhibiting high variance. This seems to come down to Intel Thread Director / hybrid architecture with sometimes these workloads getting placed initially on the E cores and other times going straight to the P cores as would be intended for the best default behavior.

We aren't used to seeing Windows have such good OpenJDK Java performance over Linux...

In some areas, Intel's Clear Linux still was the front-runner and squeezed past Windows 11.