fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2629, got signal=6
Threads: 2
Threads: 2: [m_m] [5.0% done] [  3030/   892 kb/s] [eta 00m:57s]
Threads: 2: [m_m] [6.7% done] [  4072/     0 kb/s] [eta 00m:56s]
Threads: 2: [m_m] [8.3% done] [  1912/ 68984 kb/s] [eta 00m:55s]
Threads: 2: [F_m] [10.0% done] [  4132/ 21932 kb/s] [eta 00m:54s]
Threads: 2: [F_m] [11.7% done] [    64/     0 kb/s] [eta 00m:53s]
Threads: 2: [F_m] [13.3% done] [   180/     0 kb/s] [eta 00m:52s]
Threads: 2: [F_m] [15.0% done] [   116/     0 kb/s] [eta 00m:51s]
Threads: 2: [F_m] [16.7% done] [     0/     0 kb/s] [eta 00m:50s]
Threads: 2: [F_m] [18.3% done] [   304/     0 kb/s] [eta 00m:49s]
Threads: 2: [V_m] [20.0% done] [ 11280/     0 kb/s] [eta 00m:48s]
Threads: 2: [V_m] [21.7% done] [ 29400/     0 kb/s] [eta 00m:47s]
Threads: 2: [V_m] [23.3% done] [ 35564/   624 kb/s] [eta 00m:46s]
Threads: 1: [__m] [40.5% done] [ 23020/ 40092 kb/s] [eta 00m:22s]
Threads: 1: [__F] [100.0% done] [     0/ 40720 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [67.9% done] [  1804/     0 kb/s] [eta 00m:09s]
Threads: 1: [__V] [87.0% done] [ 27704/     0 kb/s] [eta 00m:03s]
Threads: 1: [__V] [100.0% done] [ 33924/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=2628
  read : io=100MiB, bw=6,999KiB/s, runt= 14981msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  809, avg=34.72, stdev=93.57
    bw (KiB/s) : min=    0, max=35479, per=140.29%, avg=13288.53, stdev=15126.89
  write: io=91,808KiB, bw=7,921KiB/s, runt= 11868msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  522, avg= 3.08, stdev=31.17
    bw (KiB/s) : min=    0, max=139395, per=239.85%, avg=35292.25, stdev=69404.32
  cpu          : usr=4.38%, sys=2.86%, ctx=4149
  IO depths    : 1=1.7%, 2=55.7%, 4=30.0%, 8=12.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.7%, 4=0.1%, 10=23.4%, 20=12.9%, 50=8.7%, 100=1.2%
     lat (msec): 250=1.9%, 500=1.2%, 750=0.6%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2629
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.0%, 2=95.9%, 4=2.1%, 8=0.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=95.3%, 4=2.1%, 10=0.4%, 20=0.4%, 50=0.1%, 100=0.2%
     lat (msec): 250=0.3%, 500=0.2%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2630
  read : io=100MiB, bw=4,711KiB/s, runt= 22249msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 6005, avg=87.13, stdev=401.96
    bw (KiB/s) : min=   27, max=33239, per=72.48%, avg=6865.59, stdev=11148.20
  write: io=81,436KiB, bw=4,364KiB/s, runt= 19108msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  928, avg= 2.68, stdev=40.95
    bw (KiB/s) : min=    0, max=141279, per=321.30%, avg=47275.67, stdev=81409.74
  cpu          : usr=2.80%, sys=1.65%, ctx=5113
  IO depths    : 1=1.5%, 2=53.0%, 4=29.7%, 8=15.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.7%, 4=0.1%, 10=19.1%, 20=18.5%, 50=6.8%, 100=1.6%
     lat (msec): 250=2.4%, 500=1.1%, 750=1.1%, 1000=0.4%, >=2000=0.6%

Run status group 0 (all jobs):
   READ: io=201MiB, aggrb=9,472KiB/s, minb=0KiB/s, maxb=6,999KiB/s, mint=22249msec, maxt=22249msec
  WRITE: io=268MiB, aggrb=14,714KiB/s, minb=0KiB/s, maxb=7,921KiB/s, mint=22249msec, maxt=22249msec

Disk stats (read/write):
  sda: ios=2505/2456, merge=820/66036, ticks=41272/1833300, in_queue=1878016, util=95.80%
2.21user 1.04system 0:22.68elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2483minor)pagefaults 0swaps