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    文件存储 NAS：NAS性能测试

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    文件存储 NAS：NAS性能测试

    更新时间：Aug 26, 2026

    本文介绍如何在Linux/Windows系统中使用FIO工具对文件系统进行吞吐和IOPS的性能测试。

    前提条件

    您已经创建了待测试的文件系统，并将文件系统挂载到ECS实例上。具体操作，请参见快速入门。

    背景信息

    本文示例的性能参数，均为Linux/Windows系统下采用FIO工具的测试结果，以此作为文件存储NAS产品性能指标参考。如果想达到文件存储NAS的官网性能指标 ，建议使用多台ECS进行测试。文件存储NAS的官网性能指标，请参见文件存储NAS。

    注意事项

    性能测试前，请注意以下事项。

    • 吞吐最大不会超过ECS内网带宽，如果内网带宽太小，则吞吐会被流量控制。

      例如，您购买的是最低容量的通用容量型NAS文件系统，其初始读吞吐为150 MB/s。如果您的ECS内网带宽为100 Mbps，则吞吐最大可达12.5 MB/s，如果要测试达到150 MB/s，则需要至少12台ECS进行测试。 如果您的ECS内网带宽为1 Gbps，则吞吐最大可达到125 MB/s，如果要测试达到150 MB/s，则需要至少2台ECS进行测试。

    • 在Linux操作系统中，NFS客户端对于同时发起的NFS请求数量进行了控制，默认编译的内核中此参数值为2，严重影响性能。请在安装NFS客户端后，修改同时发起的NFS请求数量，提高NFS性能。具体操作，请参见如何修改同时发起的NFS请求数量？。

    • 在Windows操作系统中，测试NFS协议NAS文件系统性能会受限于Windows NFS客户端串行执行单个文件系统的请求，请调整-numjobs参数增加FIO测试文件数量。

    操作步骤

    1. 远程连接ECS实例。具体操作，请参见ECS连接方式。

    2. 安装FIO测试工具。如果已安装，请跳过此步骤，直接运行性能测试命令。

      • Linux操作系统

        操作系统

        安装命令

        CentOS

        sudo yum install fio

        Redhat

        Alibaba Cloud Linux

        Ubuntu

        依次执行以下安装命令：

        1. sudo apt-get  update
        2. sudo apt-get install fio

        Debian

      • Windows操作系统

        您可以下载msi格式的安装包进行安装。FIO安装包下载地址，请参见fio官网。

    3. 运行性能测试命令，具体的命令请参见下文。

    Linux系统下的性能测试命令

    本节以通用容量型NAS为例，在单台Linux ECS中执行以下命令测试性能。

    • 随机读IOPS：

      fio -numjobs=1 -iodepth=128 -direct=1 -ioengine=libaio -sync=1 -rw=randread -bs=4K -size=1G -time_based -runtime=60 -name=Fio -directory=/mnt

      测试结果样例：

      
Fio_168690241742: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=128
fio-3.7
Starting 1 process
Fio_168690241742: Laying out IO file (1 file / 1024MiB)

Fio_168690241742: (groupid=0, jobs=1): err= 0: pid=24515: Fri Jun 16 16:01:21 2023
   read: IOPS=15.1k, BW=59.1MiB/s (61.0MB/s)(3562MiB/60258msec)
    slat (usec): min=2, max=142291, avg= 5.22, stdev=149.03
    clat (usec): min=607, max=4629.5k, avg=8451.38, stdev=19797.83
     lat (usec): min=650, max=4629.5k, avg=8456.67, stdev=19798.32
    lat percentiles (usec):
     |  1.00th=[  758],  5.00th=[  816], 10.00th=[  857], 20.00th=[  938],
     | 30.00th=[ 1037], 40.00th=[ 1172], 50.00th=[ 1352], 60.00th=[ 1680],
     | 70.00th=[ 3163], 80.00th=[ 17957], 90.00th=[ 20055], 95.00th=[ 22414],
     | 99.00th=[ 83362], 99.50th=[ 92799], 99.90th=[175113], 99.95th=[278922],
     | 99.99th=[517997]
   bw (  KiB/s): min=58584, max=169104, per=100.00%, avg=60776.15, stdev=10028.08, samples=120
   iops        : min=14646, max=42276, avg=15193.99, stdev=2507.02, samples=120
  lat (usec)   : 750=0.88%, 1000=25.93%
  lat (msec)   : 2=38.35%, 4=5.66%, 10=1.74%, 20=17.00%, 50=8.61%
  lat (msec)   : 100=1.48%, 250=0.29%, 500=0.07%, 750=0.01%, 1000=0.01%
  cpu          : usr=2.86%, sys=11.57%, ctx=525042, majf=0, minf=160
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
     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=0.0%, 64=0.0%, >=64=0.1%
     issued rwts: total=911950,0,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=128

Run status group 0 (all jobs):
   READ: bw=59.1MiB/s (61.0MB/s), 59.1MiB/s-59.1MiB/s (61.0MB/s-61.0MB/s), io=3562MiB (3735MB), run=60258-60258msec

    • 随机写IOPS： 

      fio -numjobs=1 -iodepth=128 -direct=1 -ioengine=libaio -sync=1 -rw=randwrite -bs=4K -size=1G -time_based -runtime=60 -name=Fio -directory=/mnt

      测试结果样例：

      
Fio_168690232321: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=128
fio-3.7
Starting 1 process
Fio_168690232321: Laying out IO file (1 file / 1024MiB)

Fio_168690232321: (groupid=0, jobs=1): err= 0: pid=24409: Fri Jun 16 15:59:44 2023
  write: IOPS=15.2k, BW=59.4MiB/s (62.3MB/s)(3567MiB/60008msec)
    slat (usec): min=2, max=5193, avg= 4.94, stdev= 5.58
    clat (usec): min=1596, max=148914, avg=8405.03, stdev=4954.14
     lat (usec): min=1601, max=148918, avg=8410.06, stdev=4954.12
    lat percentiles (usec):
     |  1.00th=[ 2966],  5.00th=[ 3687], 10.00th=[ 4113], 20.00th=[ 4686],
     | 30.00th=[ 5145], 40.00th=[ 5735], 50.00th=[ 6259], 60.00th=[ 6849],
     | 70.00th=[10552], 80.00th=[14222], 90.00th=[15401], 95.00th=[16319],
     | 99.00th=[18482], 99.50th=[21103], 99.90th=[38536], 99.95th=[44303],
     | 99.99th=[81265]
   bw (  KiB/s): min=56408, max=95856, per=99.99%, avg=60870.87, stdev=5497.41, samples=120
   iops        : min=14102, max=23964, avg=15217.70, stdev=1374.35, samples=120
  lat (msec)   : 2=0.01%, 4=8.61%, 10=61.08%, 20=29.70%, 50=0.57%
  lat (msec)   : 100=0.02%, 250=0.01%
  cpu          : usr=2.67%, sys=8.95%, ctx=216723, majf=0, minf=27
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
     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=0.0%, 64=0.0%, >=64=0.1%
     issued rwts: total=0,913236,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=128

Run status group 0 (all jobs):
  WRITE: bw=59.4MiB/s (62.3MB/s), 59.4MiB/s-59.4MiB/s (62.3MB/s-62.3MB/s), io=3567MiB (3741MB), run=60008-60008msec

    • 随机读吞吐：

      fio -numjobs=1 -iodepth=128 -direct=1 -ioengine=libaio -sync=1 -rw=randread -bs=1M -size=1G -time_based -runtime=60 -name=Fio -directory=/mnt

      测试结果样例：

      
Fio_168690251150: (g=0): rw=randread, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=libaio, iodepth=128
fio-3.7
Starting 1 process
Fio_168690251150: Laying out IO file (1 file / 1024MiB)

Fio_168690251150: (groupid=0, jobs=1): err= 0: pid=24616: Fri Jun 16 16:03:05 2023
   read: IOPS=498, BW=500MiB/s (524MB/s)(29.4GiB/60257msec)
    slat (usec): min=80, max=251817, avg=98.36, stdev=1453.22
    clat (msec): min=11, max=519, avg=256.37, stdev=17.04
     lat (msec): min=11, max=519, avg=256.46, stdev=16.99
    lat percentiles (msec):
     |  1.00th=[  247],  5.00th=[  255], 10.00th=[  255], 20.00th=[  255],
     | 30.00th=[  255], 40.00th=[  255], 50.00th=[  257], 60.00th=[  257],
     | 70.00th=[  257], 80.00th=[  257], 90.00th=[  257], 95.00th=[  257],
     | 99.00th=[  271], 99.50th=[  376], 99.90th=[  481], 99.95th=[  493],
     | 99.99th=[  506]
   bw (  KiB/s): min=489472, max=532480, per=99.99%, avg=512076.73, stdev=3669.64, samples=120
   iops        : min=  478, max=  520, avg=500.03, stdev= 3.58, samples=120
  lat (msec)   : 20=0.03%, 50=0.05%, 100=0.09%, 250=1.47%, 500=98.75%
  lat (msec)   : 750=0.03%
  cpu          : usr=0.03%, sys=4.83%, ctx=30067, majf=0, minf=5
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=117.1%
     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=0.0%, 64=0.0%, >=64=0.1%
     issued rwts: total=30010,0,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=128

Run status group 0 (all jobs):
   READ: bw=500MiB/s (524MB/s), 500MiB/s-500MiB/s (524MB/s-524MB/s), io=29.4GiB (31.6GB), run=60257-60257msec

    • 随机写吞吐：

      fio -numjobs=1 -iodepth=128 -direct=1 -ioengine=libaio -sync=1 -rw=randwrite -bs=1M -size=1G -time_based -runtime=60 -name=Fio -directory=/mnt

      测试结果样例：

      测试结果中随机写带宽（BW）为 500MiB/s。

      
Fio_168690260582: (g=0): rw=randwrite, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=libaio, iodepth=128
fio-3.7
Starting 1 process
Fio_168690260582: Laying out IO file (1 file / 1024MiB)

Fio_168690260582: (groupid=0, jobs=1): err= 0: pid=24705: Fri Jun 16 16:04:37 2023
  write: IOPS=498, BW=500MiB/s (524MB/s)(29.4GiB/60254msec)
    slat (usec): min=105, max=251450, avg=156.25, stdev=1450.74
    clat (msec): min=18, max=506, avg=256.29, stdev=17.20
     lat (msec): min=19, max=506, avg=256.45, stdev=17.15
    lat percentiles (msec):
     |  1.00th=[  243],  5.00th=[  253], 10.00th=[  253], 20.00th=[  255],
     | 30.00th=[  255], 40.00th=[  255], 50.00th=[  257], 60.00th=[  257],
     | 70.00th=[  257], 80.00th=[  257], 90.00th=[  259], 95.00th=[  259],
     | 99.00th=[  292], 99.50th=[  363], 99.90th=[  481], 99.95th=[  493],
     | 99.99th=[  506]
   bw (  KiB/s): min=471040, max=548864, per=99.99%, avg=512085.42, stdev=6121.76, samples=120
   iops        : min=  460, max=  536, avg=500.07, stdev= 5.98, samples=120
  lat (msec)   : 20=0.02%, 50=0.04%, 100=0.11%, 250=2.49%, 500=97.72%
  lat (msec)   : 750=0.03%
  cpu          : usr=3.24%, sys=4.52%, ctx=28949, majf=0, minf=4
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=117.0%
     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=0.0%, 64=0.0%, >=64=0.1%
     issued rwts: total=0,30009,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=128

Run status group 0 (all jobs):
  WRITE: bw=500MiB/s (524MB/s), 500MiB/s-500MiB/s (524MB/s-524MB/s), io=29.4GiB (31.6GB), run=60254-60254msec

    Windows系统下的性能测试

    本节以通用容量型NAS挂载到Z盘，FIO可执行文件安装在C:\Program Files\fio\fio.exe为例，执行以下命令测试性能。

    说明

    如果在Windows系统测试NFS协议NAS文件系统性能，受限于Windows NFS客户端串行执行单个文件系统的请求，请调整-numjobs参数增加FIO测试文件数量。

    • 随机读IOPS： 

      "c:\Program Files\fio\fio.exe" -name=Fio -numjobs=2 -iodepth=128 -direct=1 -ioengine=windowsaio -sync=1 -rw=randread -bs=4K -size=1G -time_based -runtime=60 -group_reporting -thread -directory=Z\:\

      测试结果样例：

      
Fio_168690138640: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=windowsaio, iodepth=128
...
fio-3.29
Starting 2 threads
Fio_168690138640: Laying out IO file (1 file / 1024MiB)
Fio_168690138640: Laying out IO file (1 file / 1024MiB)

Fio_168690138640: (groupid=0, jobs=2): err= 0: pid=3716: Fri Jun 16 15:57:13 2023
  read: IOPS=15.2k, BW=59.3MiB/s (62.2MB/s)(3559MiB/60015msec)
    slat (usec): min=2, max=1923, avg= 9.75, stdev= 5.93
    clat (usec): min=574, max=172102, avg=16841.03, stdev=13743.23
     lat (usec): min=582, max=172118, avg=16850.79, stdev=13743.03
    clat percentiles (usec):
     |  1.00th=[  1565],  5.00th=[  2376], 10.00th=[  3064], 20.00th=[  4752],
     | 30.00th=[  6390], 40.00th=[  8455], 50.00th=[ 16581], 60.00th=[ 19268],
     | 70.00th=[ 20841], 80.00th=[ 23725], 90.00th=[ 34341], 95.00th=[ 42730],
     | 99.00th=[ 61604], 99.50th=[ 69731], 99.90th=[ 89654], 99.95th=[ 98042],
     | 99.99th=[113771]
   bw (  KiB/s): min=57584, max=135136, per=100.00%, avg=60797.96, stdev=3971.16, samples=238
   iops        : min=14396, max=33783, avg=15199.29, stdev=992.75, samples=238
  lat (usec)   : 750=0.01%, 1000=0.08%
  lat (msec)   : 2=2.71%, 4=13.18%, 10=27.51%, 20=20.78%, 50=32.76%
  lat (msec)   : 100=2.94%, 250=0.04%
  cpu          : usr=0.00%, sys=5.83%, ctx=0, majf=0, minf=0
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
     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=0.1%, 16=0.1%, 32=0.1%, 64=0.1%, >=64=0.1%
     issued rwts: total=911224,0,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=128

Run status group 0 (all jobs):
   READ: bw=59.3MiB/s (62.2MB/s), 59.3MiB/s-59.3MiB/s (62.2MB/s-62.2MB/s), io=3559MiB (3732MB),  run=60015-60015msec

    • 随机写IOPS：

      "c:\Program Files\fio\fio.exe" -name=Fio -numjobs=2 -iodepth=128 -direct=1 -ioengine=windowsaio -sync=1 -rw=randwrite -bs=4K -size=1G -time_based -runtime=60 -group_reporting -thread -directory=Z\:\

      测试结果样例：

      
Fio_168690107265: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=windowsaio, iodepth=128
...
fio-3.29
Starting 2 threads
Fio_168690107265: Laying out IO file (1 file / 1024MiB)
Fio_168690107265: Laying out IO file (1 file / 1024MiB)

Fio_168690107265: (groupid=0, jobs=2): err= 0: pid=4056: Fri Jun 16 15:38:56 2023
  write: IOPS=15.3k, BW=59.9MiB/s (62.8MB/s)(3592MiB/60012msec); 0 zone resets
    slat (usec): min=2, max=4469, avg=11.04, stdev=16.84
    clat (usec): min=829, max=98497, avg=16640.38, stdev=3644.71
     lat (usec): min=1373, max=98502, avg=16651.42, stdev=3644.35
    clat percentiles (usec):
     |  1.00th=[10421],  5.00th=[13042], 10.00th=[13566], 20.00th=[14091],
     | 30.00th=[14746], 40.00th=[15533], 50.00th=[16450], 60.00th=[17171],
     | 70.00th=[17695], 80.00th=[18482], 90.00th=[19530], 95.00th=[20841],
     | 99.00th=[32375], 99.50th=[36439], 99.90th=[42206], 99.95th=[46924],
     | 99.99th=[76022]
   bw (  KiB/s): min=53596, max=67392, per=100.00%, avg=61371.35, stdev=1490.41, samples=238
   iops        : min=13398, max=16848, avg=15342.70, stdev=372.62, samples=238
  lat (usec)  : 1000=0.01%
  lat (msec)  : 2=0.01%, 4=0.07%, 10=0.82%, 20=91.27%, 50=7.80%
  lat (msec)  : 100=0.04%
  cpu          : usr=0.00%, sys=5.83%, ctx=0, majf=0, minf=0
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.2%, >=64=99.7%
     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=97.5%, 8=0.9%, 16=1.0%, 32=0.6%, 64=0.1%, >=64=0.1%
     issued rwts: total=0,919647,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=128

Run status group 0 (all jobs):
  WRITE: bw=59.9MiB/s (62.8MB/s), 59.9MiB/s-59.9MiB/s (62.8MB/s-62.8MB/s), io=3592MiB (3767MB), run=60012-60012msec

    • 随机读吞吐：

      "c:\Program Files\fio\fio.exe" -name=Fio -numjobs=2 -iodepth=128 -direct=1 -ioengine=windowsaio -sync=1 -rw=randread -bs=1M -size=1G -time_based -runtime=60 -group_reporting -thread -directory=Z\:\

      测试结果样例：

      
Fio_168690086312: (g=0): rw=randread, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=windowsaio, iodepth=128
...
fio-3.29
Starting 2 threads
Fio_168690086312: Laying out IO file (1 file / 1024MiB)
Fio_168690086312: Laying out IO file (1 file / 1024MiB)

Fio_168690086312: (groupid=0, jobs=2): err= 0: pid=6400: Fri Jun 16 15:35:46 2023
  read: IOPS=655, BW=656MiB/s (688MB/s)(38.7GiB/60371msec)
    slat (usec): min=20, max=7533, avg=60.61, stdev=84.70
    clat (msec): min=42, max=2036, avg=389.97, stdev=105.38
     lat (msec): min=42, max=2036, avg=390.03, stdev=105.37
    clat percentiles (msec):
     |  1.00th=[  184],  5.00th=[  257], 10.00th=[  368], 20.00th=[  376],
     | 30.00th=[  380], 40.00th=[  384], 50.00th=[  388], 60.00th=[  393],
     | 70.00th=[  397], 80.00th=[  405], 90.00th=[  414], 95.00th=[  422],
     | 99.00th=[  785], 99.50th=[ 1217], 99.90th=[ 1888], 99.95th=[ 1938],
     | 99.99th=[ 2005]
   bw (  KiB/s): min=282587, max=1051351, per=99.93%, avg=671112.03, stdev=64303.07, samples=240
   iops        : min=  275, max= 1026, avg=655.22, stdev=62.81, samples=240
  lat (msec)   : 50=0.01%, 100=0.19%, 250=4.68%, 500=93.38%, 750=0.62%
  lat (msec)   : 1000=0.53%, 2000=0.57%, >=2000=0.02%
  cpu          : usr=0.00%, sys=1.66%, ctx=0, majf=0, minf=0
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.2%, >=64=99.7%
     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=0.1%
     issued rwts: total=39594,0,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=128

Run status group 0 (all jobs):
   READ: bw=656MiB/s (688MB/s), 656MiB/s-656MiB/s (688MB/s-688MB/s), io=38.7GiB (41.5GB), run=60371-60371msec

    • 随机写吞吐：

      "c:\Program Files\fio\fio.exe" -name=Fio -numjobs=2 -iodepth=128 -direct=1 -ioengine=windowsaio -sync=1 -rw=randwrite -bs=1M -size=1G -time_based -runtime=60 -group_reporting -thread -directory=Z\:\

      测试结果样例：

      
Fio_168690096808: (g=0): rw=randwrite, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=windowsaio, iodepth=128
...
fio-3.29
Starting 2 threads
Fio_168690096808: Laying out IO file (1 file / 1024MiB)
Fio_168690096808: Laying out IO file (1 file / 1024MiB)

Fio_168690096808: (groupid=0, jobs=2): err= 0: pid=4496: Fri Jun 16 15:37:12 2023
  write: IOPS=874, BW=874MiB/s (917MB/s)(51.5GiB/60296msec); 0 zone resets
    slat (usec): min=54, max=14217, avg=99.50, stdev=104.17
    clat (msec): min=8, max=972, avg=292.48, stdev=72.43
     lat (msec): min=8, max=972, avg=292.58, stdev=72.43
    clat percentiles (msec):
     |  1.00th=[   89],  5.00th=[  174], 10.00th=[  220], 20.00th=[  249],
     | 30.00th=[  292], 40.00th=[  300], 50.00th=[  300], 60.00th=[  305],
     | 70.00th=[  305], 80.00th=[  313], 90.00th=[  351], 95.00th=[  359],
     | 99.00th=[  575], 99.50th=[  667], 99.90th=[  852], 99.95th=[  885],
     | 99.99th=[  919]
   bw (  KiB/s): min=278528, max=1503232, per=100.00%, avg=895241.67, stdev=80207.46, samples=240
   iops        : min=  272, max= 1468, avg=873.98, stdev=78.34, samples=240
  lat (msec)   : 10=0.01%, 20=0.14%, 50=0.24%, 100=0.92%, 250=19.01%
  lat (msec)   : 500=78.07%, 750=1.34%, 1000=0.26%
  cpu          : usr=1.66%, sys=0.83%, ctx=0, majf=0, minf=0
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=99.8%
     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=99.1%, 8=0.6%, 16=0.3%, 32=0.1%, 64=0.1%, >=64=0.1%
     issued rwts: total=0,52715,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=128

Run status group 0 (all jobs):
  WRITE: bw=874MiB/s (917MB/s), 874MiB/s-874MiB/s (917MB/s-917MB/s), io=51.5GiB (55.3GB), run=60296-60296msec

    FIO参数说明

    测试命令中有关FIO各参数含义的说明如下表所示。

    参数

    说明

    direct

    表示是否使用direct I/O。默认值：1。

    • 值为1：表示使用direct I/O，忽略I/O缓存，数据直写。

    • 值为0：表示不使用direct I/O。

    iodepth

    表示测试时的IO队列深度。例如-iodepth=1表示FIO控制请求中的I/O最大个数为1。

    rw

    表示测试时的读写策略。您可以设置为：

    • randwrite：随机写。

    • randread：随机读。

    • read：顺序读。

    • write：顺序写。

    • randrw：混合随机读写。

    ioengine

    表示测试时FIO选择哪种I/O引擎，通常选择libaio，更符合日常应用模式，更多的选择请查阅FIO官方文档。

    bs

    表示I/O单元的块大小（block size）。读取和写入的值可以以read、write格式单独指定，其中任何一个都可以为空以将该值保留为其默认值。

    size

    表示测试文件大小。

    FIO会将指定的文件大小全部读/写完成，然后才停止测试，除非受到其他选项（例如运行时）的限制。如果未指定该参数，FIO将使用给定文件或设备的完整大小。也可以将大小作为1到100之间的百分比给出。例如指定size=20%，FIO将使用给定文件或设备完整大小的20%空间。

    numjobs

    表示测试的并发线程数。

    runtime

    表示测试时间，即FIO运行时长。

    如果未指定该参数，则FIO会持续将上述size指定大小的文件，以每次bs值为块大小读/写完。

    group_reporting

    表示测试结果显示模式。

    如果指定该参数，测试结果会汇总每个进程的统计信息，而不是以不同任务来统计信息。

    directory

    表示待测试的文件系统挂载路径。

    name

    表示测试任务名称，可以随意设定。

    有关各参数的更多说明，请参见FIO MAN手册。

    相关问题

    更多有关NAS性能方面的FAQ，请参见性能说明FAQ。