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; (SPRandom) SanDisk Random preconditioning example
; Requirements
; 1. Single file
; 2. Single job (numjobs=1)
; 3. Assumes norandommap=1
; 4. Assumes random_generator=lfsr
;
; FIO_BS should be set to driver indirection unit (IU) size.
; IU is the smallest unit of data that can be mapped from a LBA
; on the host to a physical location on the SSD's flash memory.
;
; Basic execution example, run with io_uring
; env FIO_BS=4096 \
; fio --filename=/dev/nvme0n1 --ioengine=io_uring examples/sprandom.fio
;
; Enable debug output for the 'sprandom' module
; env FIO_BS=4096 \
; fio --debug=sprandom --filename=/dev/nvme0n1 examples/sprandom.fio
;
; Set over-provisioning according to vendor recommendation (21%)
; env FIO_BS=4096 \
; fio --spr_op=0.21 --filename=/dev/nvme0n1 examples/sprandom.fio
;
; For large devices it is better to use more regions, to increase precision
; and reduce memory allocation. The allocation is proportional to the region size.
; env FIO_BS=4096 \
; fio --spr_num_regions=400 --filename=/dev/nvme0n1 examples/sprandom.fio
;
[global]
ioengine=libaio
rw=randwrite
bs=${FIO_BS}
blockalign=${FIO_BS}
direct=1
norandommap=1
iodepth=64
[preconditioning]
sprandom=1
spr_op=0.15
spr_num_regions=100
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