1. 磁盘基准测试 1.1 4k 随机写 1 2 3 4 5 6 7 8 9 10 11 12 13 14 fio \ --name=4k_randwrite \ --rw=randwrite \ --bs=4k \ --ioengine=libaio \ --direct=1 \ --numjobs=8 \ --iodepth=32 \ --size=20G \ --time_based \ --runtime=120 \ --group_reporting \ --allow_mounted_write=1 \ --filename=/data1/fio-4k-randwrite.dat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Starting 8 processes 4k_randwrite: Laying out IO file (1 file / 20480MiB) Jobs: 8 (f=8): [w(8)][100.0%][r=0KiB/s,w=252MiB/s][r=0,w=64.5k IOPS][eta 00m:00s] 4k_randwrite: (groupid=0, jobs=8): err= 0: pid=31269 write: IOPS=65.1k, BW=254MiB/s (267MB/s)(29.8GiB/120004msec) slat (usec): min=2, max=300387, avg=98.81, stdev=642.76