From Ramereth, 1 Year ago, written in Plain Text.
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  1. [root@test ~]# fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixread=75
  2. test: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=64
  3. fio-3.1
  4. Starting 1 process
  5. test: Laying out IO file (1 file / 4096MiB)
  6. Jobs: 1 (f=1): [m(1)][100.0%][r=3480KiB/s,w=1132KiB/s][r=870,w=283 IOPS][eta 00m:00s]
  7. test: (groupid=0, jobs=1): err= 0: pid=4266: Mon Jul  1 18:12:39 2019
  8.    read: IOPS=890, BW=3561KiB/s (3646kB/s)(3070MiB/882911msec)
  9.    bw (  KiB/s): min=    8, max=11272, per=100.00%, avg=3912.62, stdev=2361.00, samples=1606
  10.    iops        : min=    2, max= 2818, avg=978.07, stdev=590.24, samples=1606
  11.   write: IOPS=297, BW=1190KiB/s (1219kB/s)(1026MiB/882911msec)
  12.    bw (  KiB/s): min=   24, max= 3472, per=100.00%, avg=1456.36, stdev=625.08, samples=1442
  13.    iops        : min=    6, max=  868, avg=364.00, stdev=156.26, samples=1442
  14.   cpu          : usr=0.80%, sys=2.68%, ctx=515929, majf=0, minf=8
  15.   IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
  16.      submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  17.      complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.1%, >=64=0.0%
  18.      issued rwt: total=785920,262656,0, short=0,0,0, dropped=0,0,0
  19.      latency   : target=0, window=0, percentile=100.00%, depth=64
  20.  
  21. Run status group 0 (all jobs):
  22.    READ: bw=3561KiB/s (3646kB/s), 3561KiB/s-3561KiB/s (3646kB/s-3646kB/s), io=3070MiB (3219MB), run=882911-882911msec
  23.   WRITE: bw=1190KiB/s (1219kB/s), 1190KiB/s-1190KiB/s (1219kB/s-1219kB/s), io=1026MiB (1076MB), run=882911-882911msec
  24.  
  25. Disk stats (read/write):
  26.   sda: ios=786726/263097, merge=0/291, ticks=34404380/22066050, in_queue=56477460, util=100.00%
  27.  
  28. [root@test-ssd ~]# fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixread=75
  29. test: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=64
  30. fio-3.1
  31. Starting 1 process
  32. test: Laying out IO file (1 file / 4096MiB)
  33. Jobs: 1 (f=1): [m(1)][99.9%][r=4785KiB/s,w=1250KiB/s][r=1196,w=312 IOPS][eta 00m:01s]
  34. test: (groupid=0, jobs=1): err= 0: pid=4265: Mon Jul  1 18:13:47 2019
  35.    read: IOPS=1132, BW=4529KiB/s (4638kB/s)(3070MiB/694115msec)
  36.    bw (  KiB/s): min=    8, max=21176, per=100.00%, avg=7986.23, stdev=4148.87, samples=786
  37.    iops        : min=    2, max= 5294, avg=1996.48, stdev=1037.22, samples=786
  38.   write: IOPS=378, BW=1514KiB/s (1550kB/s)(1026MiB/694115msec)
  39.    bw (  KiB/s): min=   16, max= 7192, per=100.00%, avg=2897.49, stdev=1223.25, samples=724
  40.    iops        : min=    4, max= 1798, avg=724.28, stdev=305.80, samples=724
  41.   cpu          : usr=0.66%, sys=1.82%, ctx=102681, majf=0, minf=8
  42.   IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
  43.      submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  44.      complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.1%, >=64=0.0%
  45.      issued rwt: total=785920,262656,0, short=0,0,0, dropped=0,0,0
  46.      latency   : target=0, window=0, percentile=100.00%, depth=64
  47.  
  48. Run status group 0 (all jobs):
  49.    READ: bw=4529KiB/s (4638kB/s), 4529KiB/s-4529KiB/s (4638kB/s-4638kB/s), io=3070MiB (3219MB), run=694115-694115msec
  50.   WRITE: bw=1514KiB/s (1550kB/s), 1514KiB/s-1514KiB/s (1550kB/s-1550kB/s), io=1026MiB (1076MB), run=694115-694115msec
  51.  
  52. Disk stats (read/write):
  53.   sda: ios=786536/262951, merge=0/184, ticks=4874070/39112800, in_queue=43986720, util=100.00%
  54.