# io_uring_cmd I/O engine for nvme-ns generic character device with FDP enabled # This assumes the namespace is already configured with FDP support and has at # least 8 available reclaim units. # # Each job targets different ranges of LBAs with different placement # identifiers, and has different write intensity. [global] filename=/dev/ng0n1 ioengine=io_uring_cmd cmd_type=nvme iodepth=32 bs=4K fdp=1 time_based=1 runtime=1000 [write-heavy] rw=randrw rwmixwrite=90 fdp_pli=0,1,2,3 offset=0% size=30% [write-mid] rw=randrw rwmixwrite=30 fdp_pli=4,5 offset=30% size=30% [write-light] rw=randrw rwmixwrite=10 fdp_pli=6 offset=60% size=30%