[fio.git] / examples / rand-zones.fio

# Sample job file demonstrating how to use zoned random distributionss
# to have skewed random accesses. This example has 50% of the accesses
# to the first 5% of the file (50/5), 30% to the next 15% (30/15), and
# finally 20% of the IO will end up in the remaining 80%.
[zones]
size=2g
direct=1
bs=4k
rw=randread
norandommap
random_distribution=zoned:50/5:30/15:20/

# It's also possible to use zoned_abs to specify absolute sizes. For
# instance, if you do:
#
# random_distribution=zoned_abs:50/10G:30/100G:20/500G
#
# Then 50% of the access will be to the first 10G of the drive, 30%
# will be to the next 100G, and 20% will be to the next 500G.

# The above applies to all of reads/writes/trims. If we wanted to do
# something differently for writes, let's say 50% for the first 10%
# and 50% for the remaining 90%, we could do it by adding a new section
# after a a comma.

# random_distribution=zoned:50/5:30/15:20/,50/10:50/90
Commit	Line	Data
	1	# Sample job file demonstrating how to use zoned random distributionss
	2	# to have skewed random accesses. This example has 50% of the accesses
	3	# to the first 5% of the file (50/5), 30% to the next 15% (30/15), and
	4	# finally 20% of the IO will end up in the remaining 80%.
	5	[zones]
	6	size=2g
	7	direct=1
	8	bs=4k
	9	rw=randread
	10	norandommap
	11	random_distribution=zoned:50/5:30/15:20/
	12
	13	# It's also possible to use zoned_abs to specify absolute sizes. For
	14	# instance, if you do:
	15	#
	16	# random_distribution=zoned_abs:50/10G:30/100G:20/500G
	17	#
	18	# Then 50% of the access will be to the first 10G of the drive, 30%
	19	# will be to the next 100G, and 20% will be to the next 500G.
	20
	21	# The above applies to all of reads/writes/trims. If we wanted to do
	22	# something differently for writes, let's say 50% for the first 10%
	23	# and 50% for the remaining 90%, we could do it by adding a new section
	24	# after a a comma.
	25
	26	# random_distribution=zoned:50/5:30/15:20/,50/10:50/90