If not set, the random sequence depends on the randrepeat
setting.
-use_os_rand=bool Fio can either use the random generator supplied by the OS
- to generator random offsets, or it can use it's own internal
- generator (based on Tausworthe). Default is to use the
- internal generator, which is often of better quality and
- faster.
-
fallocate=str Whether pre-allocation is performed when laying down files.
Accepted values are: