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: [mFm] [33.3% done] [  7936/ 65280 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30549, got signal=6
Threads: 2: [_Fm] [33.3% done] [  1232/ 33408 kb/s] [eta 00m:08s]
Threads: 2: [_Fm] [33.3% done] [   668/   468 kb/s] [eta 00m:10s]
Threads: 2: [_Fm] [33.3% done] [  1136/   340 kb/s] [eta 00m:12s]
Threads: 2: [_Fm] [35.0% done] [  1428/     0 kb/s] [eta 00m:13s]
Threads: 2: [_Fm] [34.8% done] [  1108/     0 kb/s] [eta 00m:15s]
Threads: 2: [_Fm] [36.0% done] [  1120/   224 kb/s] [eta 00m:16s]
Threads: 2: [_Fm] [37.0% done] [   444/     0 kb/s] [eta 00m:17s]
Threads: 2: [_Fm] [36.7% done] [   971/     0 kb/s] [eta 00m:19s]
Threads: 2: [_Fm] [37.5% done] [  1114/     0 kb/s] [eta 00m:20s]
Threads: 2: [_Fm] [48.1% done] [   576/ 13800 kb/s] [eta 00m:14s]
Threads: 2: [_Fm] [48.3% done] [   880/     0 kb/s] [eta 00m:15s]
Threads: 2: [_VF] [71.4% done] [  6360/ 29648 kb/s] [eta 00m:06s]
Threads: 2: [_VF] [76.2% done] [  5276/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VF] [81.0% done] [  9264/     0 kb/s] [eta 00m:04s]
Threads: 2: [_VF] [85.7% done] [  4948/     0 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30551, got signal=6
Threads: 1: [_V_] [100.0% done] [ 24080/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [100.0% done] [ 32600/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=30549
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=88.6%, 4=5.2%, 8=5.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=88.5%, 4=0.2%, 10=1.8%, 20=2.6%, 50=1.0%, 100=0.7%
     lat (msec): 250=2.9%, 500=2.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30550
  read : io=100MiB, bw=5,020KiB/s, runt= 20886msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  287, avg=36.66, stdev=52.32
    bw (KiB/s) : min=   20, max=37782, per=174.12%, avg=11423.71, stdev=11881.70
  write: io=94,200KiB, bw=6,669KiB/s, runt= 14464msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  183, avg= 1.19, stdev=11.38
    bw (KiB/s) : min=    0, max=22092, per=58.32%, avg=11046.00, stdev=15621.40
  cpu          : usr=3.77%, sys=2.09%, ctx=4843
  IO depths    : 1=1.5%, 2=54.1%, 4=30.8%, 8=13.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.2%, 4=1.6%, 10=18.6%, 20=12.6%, 50=7.5%, 100=4.7%
     lat (msec): 250=6.5%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30551
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=80.2%, 4=3.8%, 8=15.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=79.3%, 4=1.4%, 10=0.0%, 20=0.1%, 50=0.5%, 100=1.8%
     lat (msec): 250=5.4%, 500=3.9%, 750=4.5%, 1000=2.0%, >=2000=0.4%

Run status group 0 (all jobs):
   READ: io=131MiB, aggrb=6,561KiB/s, minb=0KiB/s, maxb=5,020KiB/s, mint=0msec, maxt=20886msec
  WRITE: io=261MiB, aggrb=18,940KiB/s, minb=0KiB/s, maxb=6,669KiB/s, mint=0msec, maxt=20886msec

Disk stats (read/write):
  sda: ios=1754/2562, merge=467/64050, ticks=39160/1930424, in_queue=2036364, util=97.56%
2.21user 1.00system 0:21.21elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2491minor)pagefaults 0swaps