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
Threads: 3
Threads: 3: [mFF] [7.5% done] [  1561/   212 kb/s] [eta 00m:37s]
Threads: 3: [mFF] [8.9% done] [  1264/   900 kb/s] [eta 00m:41s]
Threads: 3: [mFF] [10.0% done] [  1585/     0 kb/s] [eta 00m:45s]
Threads: 3: [mFF] [33.3% done] [  1172/ 33551 kb/s] [eta 00m:12s]
Threads: 3: [mFF] [70.0% done] [   104/ 52376 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19362, got signal=6
Threads: 2: [_FF] [100.0% done] [    44/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [70.6% done] [   500/     0 kb/s] [eta 00m:05s]
Threads: 2: [_FV] [68.4% done] [  2052/     0 kb/s] [eta 00m:06s]
Threads: 2: [_VV] [70.0% done] [ 10580/     0 kb/s] [eta 00m:06s]
Threads: 2: [_VV] [78.9% done] [ 33536/     0 kb/s] [eta 00m:04s]
Threads: 2: [_VV] [88.9% done] [ 38496/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [94.4% done] [ 33000/     0 kb/s] [eta 00m:01s]
Threads: 2: [_VV] [100.0% done] [ 32388/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [100.0% done] [ 33748/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=19362
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=89.5%, 4=2.8%, 8=7.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=90.3%, 4=0.3%, 10=0.1%, 20=0.0%, 50=0.2%, 100=2.3%
     lat (msec): 250=2.7%, 500=1.3%, 750=1.6%, 1000=0.7%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=19363
  read : io=100MiB, bw=5,260KiB/s, runt= 19934msec
    clat (msec): min=    0, max=  351, avg=26.16, stdev=52.52
    bw (KiB/s) : min=   12, max=35002, per=137.84%, avg=15588.09, stdev=10804.04
  write: io=100MiB, bw=7,411KiB/s, runt= 14148msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.02
    clat (msec): min=    0, max=   11, avg= 0.42, stdev= 1.04
    bw (KiB/s) : min=    0, max=97132, per=232.52%, avg=48566.00, stdev=68682.70
  cpu          : usr=4.94%, sys=2.15%, ctx=5469
  IO depths    : 1=1.2%, 2=56.2%, 4=32.3%, 8=10.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.3%, 4=3.6%, 10=22.7%, 20=17.1%, 50=4.4%, 100=0.3%
     lat (msec): 250=3.5%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19364
  read : io=100MiB, bw=5,624KiB/s, runt= 18642msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  898, avg=34.02, stdev=72.11
    bw (KiB/s) : min=   22, max=31817, per=111.59%, avg=12619.20, stdev=10854.51
  write: io=99,276KiB, bw=8,514KiB/s, runt= 11940msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  119, avg= 1.09, stdev= 8.86
    bw (KiB/s) : min=    0, max=51350, per=122.92%, avg=25675.00, stdev=36309.93
  cpu          : usr=4.66%, sys=2.45%, ctx=5661
  IO depths    : 1=1.0%, 2=53.0%, 4=33.3%, 8=12.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.3%, 4=2.5%, 10=16.4%, 20=18.7%, 50=7.6%, 100=1.4%
     lat (msec): 250=5.0%, 500=0.7%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=215MiB, aggrb=11,309KiB/s, minb=0KiB/s, maxb=5,624KiB/s, mint=18642msec, maxt=19934msec
  WRITE: io=282MiB, aggrb=20,887KiB/s, minb=0KiB/s, maxb=8,514KiB/s, mint=18642msec, maxt=19934msec

Disk stats (read/write):
  sda: ios=2294/2060, merge=952/69898, ticks=53188/1659072, in_queue=1718488, util=98.79%
2.56user 1.21system 0:20.25elapsed 18%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps