1.命令行测试
100%随机，100%读，4K
fio -filename=/dev/emcpowerb -direct=1 -iodepth 1 -thread -rw=randread -ioengine=psync -bs=4k -size=1000G -numjobs=50 -runtime=180 -group_reporting -name=rand_100read_4k
100%随机，100%写，4K
fio -filename=/dev/emcpowerb -direct=1 -iodepth 1 -thread -rw=randwrite -ioengine=psync -bs=4k -size=1000G -numjobs=50 -runtime=180 -group_reporting -name=rand_100write_4k
100%顺序，100%读，4K
fio -filename=/dev/emcpowerb -direct=1 -iodepth 1 -thread -rw=read -ioengine=psync -bs=4k -size=1000G -numjobs=50 -runtime=180 -group_reporting -name=sqe_100read_4k
100%顺序，100%写，4K
fio -filename=/dev/emcpowerb -direct=1 -iodepth 1 -thread -rw=write -ioengine=psync -bs=4k -size=1000G -numjobs=50 -runtime=180 -group_reporting -name=sqe_100write_4k
100%随机，70%读，30%写 4K
fio -filename=/dev/emcpowerb -direct=1 -iodepth 1 -thread -rw=randrw -rwmixread=70 -ioengine=psync -bs=4k -size=1000G -numjobs=50 -runtime=180 -group_reporting -name=randrw_70read_4k
2.参数文件测试
FIO提供了不同场景的压测参数文件，修改其中配置然后直接执行即可
fio examples/ssd-test.fio
上面这个参数文件用于测试ssd性能，参数文件内容如下：
其中每一个[]代表一个测试分组（global除外，global中为通用配置），会为每组分别进行测试，其中stonewall指示fio在所有指定的I/O作业（job）都完成其I/O操作之前，不会退出测试程序。这有助于确保测试结果的完整性和准确性，特别是在需要模拟复杂I/O负载场景时。
# Do some important numbers on SSD drives, to gauge what kind of
# performance you might get out of them.
#
# Sequential read and write speeds are tested, these are expected to be
# high. Random reads should also be fast, random writes are where crap
# drives are usually separated from the good drives.
#
# This uses a queue depth of 4. New SATA SSD's will support up to 32
# in flight commands, so it may also be interesting to increase the queue
# depth and compare. Note that most real-life usage will not see that
# large of a queue depth, so 4 is more representative of normal use.
#
[global]
bs=4k
ioengine=libaio
iodepth=4
size=10g
direct=1
runtime=60
directory=/mount-point-of-ssd
filename=ssd.test.file
[seq-read]
rw=read
stonewall
[rand-read]
rw=randread
stonewall
[seq-write]
rw=write
stonewall
[rand-write]
rw=randwrite
stonewall