Hello list, I'm wondering how the configuration below is interpreted: [global] ioengine=libaio direct=1 loops=1 numjobs=8 [write-prep] rw=write filename=/dev/sdb iodepth=16 bs=16k fill_device=1 stonewall=1 Will every one of the 8 jobs try to fill the device completely or will they split the task of filling the device between themselves, where each will do only 1/8 of filling the device? My reading of documentation seems to suggest the device will be filled 8 times, with jobs, possibly, stepping on each other's toes (i.e. contesting the same block), but I'm not sure. Best. Oleg