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=11.5MiB/s,w=3959KiB/s][r=2936,w=989 IOPS][eta 00m:00s]
  7. test: (groupid=0, jobs=1): err= 0: pid=3783: Mon Jul  1 17:51:06 2019
  8.    read: IOPS=2171, BW=8687KiB/s (8895kB/s)(3070MiB/361896msec)
  9.    bw (  KiB/s): min=  392, max=23880, per=100.00%, avg=8696.21, stdev=4070.99, samples=723
  10.    iops        : min=   98, max= 5970, avg=2174.02, stdev=1017.75, samples=723
  11.   write: IOPS=725, BW=2903KiB/s (2973kB/s)(1026MiB/361896msec)
  12.    bw (  KiB/s): min=  144, max= 8056, per=100.00%, avg=2906.50, stdev=1366.75, samples=723
  13.    iops        : min=   36, max= 2014, avg=726.60, stdev=341.69, samples=723
  14.   cpu          : usr=1.81%, sys=6.70%, ctx=791445, majf=0, minf=23
  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=8687KiB/s (8895kB/s), 8687KiB/s-8687KiB/s (8895kB/s-8895kB/s), io=3070MiB (3219MB), run=361896-361896msec
  23.   WRITE: bw=2903KiB/s (2973kB/s), 2903KiB/s-2903KiB/s (2973kB/s-2973kB/s), io=1026MiB (1076MB), run=361896-361896msec
  24.  
  25. Disk stats (read/write):
  26.   sda: ios=786212/262810, merge=0/85, ticks=23043541/286720, in_queue=23334721, 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)][100.0%][r=64.3MiB/s,w=20.0MiB/s][r=16.5k,w=5363 IOPS][eta 00m:00s]
  34. test: (groupid=0, jobs=1): err= 0: pid=3551: Mon Jul  1 17:51:15 2019
  35.    read: IOPS=14.0k, BW=58.4MiB/s (61.3MB/s)(3070MiB/52540msec)
  36.    bw (  KiB/s): min=31472, max=102240, per=100.00%, avg=59866.85, stdev=12290.61, samples=105
  37.    iops        : min= 7868, max=25560, avg=14966.64, stdev=3072.65, samples=105
  38.   write: IOPS=4999, BW=19.5MiB/s (20.5MB/s)(1026MiB/52540msec)
  39.    bw (  KiB/s): min=10480, max=34024, per=100.00%, avg=20010.19, stdev=4081.24, samples=105
  40.    iops        : min= 2620, max= 8506, avg=5002.48, stdev=1020.31, samples=105
  41.   cpu          : usr=6.67%, sys=26.35%, ctx=639194, majf=0, minf=23
  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=58.4MiB/s (61.3MB/s), 58.4MiB/s-58.4MiB/s (61.3MB/s-61.3MB/s), io=3070MiB (3219MB), run=52540-52540msec
  50.   WRITE: bw=19.5MiB/s (20.5MB/s), 19.5MiB/s-19.5MiB/s (20.5MB/s-20.5MB/s), io=1026MiB (1076MB), run=52540-52540msec
  51.  
  52. Disk stats (read/write):
  53.   sda: ios=784935/262396, merge=0/62, ticks=2823776/497348, in_queue=3321434, util=99.93%
  54.