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: [mmm] [8.8% done] [ 10892/  2480 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.8% done] [  7940/  6248 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [15.2% done] [ 12652/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [17.6% done] [ 11048/  1605 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  8580/  4448 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  5100/  6928 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  3831/  8095 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [26.3% done] [  4780/  3212 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.5% done] [  9328/   780 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [30.0% done] [  6892/  3256 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [  8412/  1820 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  5506/  4351 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  6604/  2569 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  6020/  3900 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.5% done] [  3904/  5762 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  3389/  6339 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  3648/  4316 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  2856/  6492 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  5408/  2584 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  5400/  2632 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  2116/  5920 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  4940/  1697 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  2820/  4468 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.3% done] [   960/  7224 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  6248/  1132 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5167, got signal=6
Threads: 2: [m_m] [58.3% done] [  3648/  3232 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [60.4% done] [  5672/   436 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [63.8% done] [  5936/   604 kb/s] [eta 00m:17s]
Threads: 2: [V_m] [63.3% done] [  8928/   248 kb/s] [eta 00m:18s]
Threads: 2: [V_m] [63.5% done] [ 11544/   196 kb/s] [eta 00m:19s]
Threads: 1: [__m] [66.7% done] [  7420/  3352 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5168, got signal=6

fio: (groupid=0): err= 0: pid=5166
  read : io=100MiB, bw=3,126KiB/s, runt= 33421msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    7, max= 1047, avg=124.17, stdev=104.93
    bw (KiB/s) : min=   51, max=12568, per=49.34%, avg=3272.75, stdev=2650.04
  write: io=22,660KiB, bw=735KiB/s, runt= 31533msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   79, max= 1016, avg=157.56, stdev=98.97
    bw (KiB/s) : min=    0, max= 4770, per=46.64%, avg=1710.67, stdev=1570.67
  cpu          : usr=0.05%, sys=0.14%, ctx=6228
  IO depths    : 1=0.1%, 2=0.3%, 4=22.5%, 8=77.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.8%, 50=32.1%, 100=9.6%
     lat (msec): 250=49.0%, 500=6.1%, 750=0.2%, 1000=0.3%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=5167
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.1%, 4=19.5%, 8=77.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.3%, 4=0.0%, 10=2.4%, 20=2.8%, 50=17.0%, 100=5.5%
     lat (msec): 250=62.6%, 500=8.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5168
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.8%, 4=15.1%, 8=82.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.5%, 20=1.9%, 50=10.6%, 100=5.2%
     lat (msec): 250=71.9%, 500=6.7%, 750=1.4%, 1000=0.8%, >=2000=0.1%

Run status group 0 (all jobs):
   READ: io=211MiB, aggrb=6,633KiB/s, minb=0KiB/s, maxb=3,126KiB/s, mint=0msec, maxt=33421msec
  WRITE: io=110MiB, aggrb=3,668KiB/s, minb=0KiB/s, maxb=735KiB/s, mint=0msec, maxt=33421msec

Disk stats (read/write):
  sda: ios=3688/2113, merge=730/311, ticks=80096/36680, in_queue=116792, util=99.13%
0.10user 0.24system 0:34.57elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2498minor)pagefaults 0swaps