[aaron@storage-rocky9 ~]$ sudo fio ./raid-test.fio
randread: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=32
randwrite: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=32
readwrite: (g=0): rw=rw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=32
fio-3.35
Starting 3 threads
Jobs: 2 (f=2): [r(1),_(1),M(1)][50.2%][r=84KiB/s,w=296KiB/s][r=21,w=74 IOPS][eta 04m:59s]
randread: (groupid=0, jobs=3): err= 0: pid=3688: Wed Jul 16 21:38:44 2025
read: IOPS=289, BW=1157KiB/s (1185kB/s)(341MiB/301666msec)
slat (nsec): min=1613, max=66903, avg=5200.65, stdev=2626.04
clat (usec): min=656, max=2879.1k, avg=200200.53, stdev=247076.34
lat (usec): min=659, max=2879.1k, avg=200205.74, stdev=247076.43
clat percentiles (msec):
| 1.00th=[ 17], 5.00th=[ 37], 10.00th=[ 51], 20.00th=[ 71],
| 30.00th=[ 85], 40.00th=[ 97], 50.00th=[ 113], 60.00th=[ 136],
| 70.00th=[ 182], 80.00th=[ 271], 90.00th=[ 426], 95.00th=[ 642],
| 99.00th=[ 1485], 99.50th=[ 1670], 99.90th=[ 1821], 99.95th=[ 1871],
| 99.99th=[ 1989]
bw ( KiB/s): min= 200, max= 2301, per=100.00%, avg=1168.10, stdev=213.29, samples=1195
iops : min= 50, max= 575, avg=292.03, stdev=53.32, samples=1195
write: IOPS=426, BW=1708KiB/s (1749kB/s)(503MiB/301666msec); 0 zone resets
slat (nsec): min=1627, max=64655, avg=4636.65, stdev=2788.48
clat (usec): min=395, max=1814.8k, avg=88730.40, stdev=50766.98
lat (usec): min=397, max=1814.8k, avg=88735.03, stdev=50767.06
clat percentiles (usec):
| 1.00th=[ 490], 5.00th=[ 50594], 10.00th=[ 58983],
| 20.00th=[ 67634], 30.00th=[ 73925], 40.00th=[ 79168],
| 50.00th=[ 84411], 60.00th=[ 89654], 70.00th=[ 95945],
| 80.00th=[ 103285], 90.00th=[ 115868], 95.00th=[ 128451],
| 99.00th=[ 252707], 99.50th=[ 429917], 99.90th=[ 734004],
| 99.95th=[ 851444], 99.99th=[1216349]
bw ( KiB/s): min= 880, max=22512, per=100.00%, avg=1719.12, stdev=606.57, samples=1196
iops : min= 220, max= 5628, avg=429.78, stdev=151.64, samples=1196
lat (usec) : 500=0.71%, 750=0.42%, 1000=0.01%
lat (msec) : 2=0.03%, 4=0.04%, 10=0.15%, 20=0.52%, 50=4.85%
lat (msec) : 100=55.37%, 250=28.35%, 500=6.19%, 750=1.80%, 1000=0.65%
lat (msec) : 2000=0.90%, >=2000=0.01%
cpu : usr=0.05%, sys=0.12%, ctx=183720, majf=0, minf=36
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=100.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%, >=64=0.0%
issued rwts: total=87278,128783,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=32
Run status group 0 (all jobs):
READ: bw=1157KiB/s (1185kB/s), 1157KiB/s-1157KiB/s (1185kB/s-1185kB/s), io=341MiB (357MB), run=301666-301666msec
WRITE: bw=1708KiB/s (1749kB/s), 1708KiB/s-1708KiB/s (1749kB/s-1749kB/s), io=503MiB (527MB), run=301666-301666msec
Disk stats (read/write):
sdb: ios=87350/128916, merge=0/3, ticks=17403222/11432998, in_queue=28836220, util=100.00%
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本文介绍了iostat命令的各种使用方式，包括仅显示CPU统计、磁盘I/O统计、网络统计等，并展示了如何针对特定设备查看I/O状态及展示扩展状态和LVM统计。
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