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=3532KiB/s,w=1372KiB/s][r=883,w=343 IOPS][eta 00m:00s]
  7. test: (groupid=0, jobs=1): err= 0: pid=3156: Mon Jul  1 20:17:15 2019
  8.    read: IOPS=908, BW=3632KiB/s (3720kB/s)(3070MiB/865437msec)
  9.    bw (  KiB/s): min=    8, max=10645, per=100.00%, avg=4079.02, stdev=2628.53, samples=1540
  10.    iops        : min=    2, max= 2661, avg=1019.72, stdev=657.13, samples=1540
  11.   write: IOPS=303, BW=1214KiB/s (1243kB/s)(1026MiB/865437msec)
  12.    bw (  KiB/s): min=   32, max= 3424, per=100.00%, avg=1549.42, stdev=682.86, samples=1355
  13.    iops        : min=    8, max=  856, avg=387.32, stdev=170.72, samples=1355
  14.   cpu          : usr=0.82%, sys=2.53%, ctx=630104, majf=0, minf=9
  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=3632KiB/s (3720kB/s), 3632KiB/s-3632KiB/s (3720kB/s-3720kB/s), io=3070MiB (3219MB), run=865437-865437msec
  23.   WRITE: bw=1214KiB/s (1243kB/s), 1214KiB/s-1214KiB/s (1243kB/s-1243kB/s), io=1026MiB (1076MB), run=865437-865437msec
  24.  
  25. Disk stats (read/write):
  26.   sda: ios=786011/263124, merge=0/359, ticks=31557030/23690180, in_queue=42905520, util=78.98%
  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)][100.0%][r=0KiB/s,w=0KiB/s][r=0,w=0 IOPS][eta 00m:00s]          
  34. test: (groupid=0, jobs=1): err= 0: pid=3170: Mon Jul  1 20:15:53 2019
  35.    read: IOPS=1166, BW=4665KiB/s (4777kB/s)(3070MiB/673877msec)
  36.    bw (  KiB/s): min=    8, max=18856, per=100.00%, avg=8855.60, stdev=3737.75, samples=710
  37.    iops        : min=    2, max= 4714, avg=2213.85, stdev=934.44, samples=710
  38.   write: IOPS=389, BW=1559KiB/s (1596kB/s)(1026MiB/673877msec)
  39.    bw (  KiB/s): min=   32, max= 6936, per=100.00%, avg=3130.59, stdev=1077.22, samples=671
  40.    iops        : min=    8, max= 1734, avg=782.59, stdev=269.30, samples=671
  41.   cpu          : usr=0.85%, sys=2.73%, ctx=538687, majf=0, minf=9
  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=4665KiB/s (4777kB/s), 4665KiB/s-4665KiB/s (4777kB/s-4777kB/s), io=3070MiB (3219MB), run=673877-673877msec
  50.   WRITE: bw=1559KiB/s (1596kB/s), 1559KiB/s-1559KiB/s (1596kB/s-1596kB/s), io=1026MiB (1076MB), run=673877-673877msec
  51.  
  52. Disk stats (read/write):
  53.   sda: ios=785999/262884, merge=0/187, ticks=3316450/39663050, in_queue=7847830, util=19.36%
  54.