I am seeing a lot of those errors: run write in 512K(1)][90.3%][w=1942MiB/s][w=7766 IOPS][eta 03m:13s] clock setaffinity failed: Invalid argument clock setaffinity failed: Invalid argument clock setaffinity failed: Invalid argument [...] clock setaffinity failed: Invalid argument Jobs: 1 (f=1): [W(1)][45.2%][w=2010MiB/s][w=4019 IOPS][eta 18m:07s] According to https://github.com/axboe/fio/issues/46, I would expect to see a bit more descriptive error (I am compiling using source checked out of https://github.com/axboe/fio on Fedora 31 on Intel), but that is not the case. Any suggestions of what I should be looking into?