Comment by mceachen

Were all your tests pure unit tests? Then sure—the OS isn’t getting in the way (and if your Linux distribution didn’t set the correct cpu scheduler, windows could be faster!)

If, however, your tests make any filesystem calls or fork a child process, there’s slim chances that Linux doesn’t absolutely trounce Windows.

To throw in a morsel of anecdata: same laptop with a dual boot runs the PhotoStructure core test suite (some 11,000 tests which have a pleasing melange of system and integration tests, not just unit tests) in 8m30s on Windows 11. Almost all the same tests complete in 3m30s on Linux.