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] [8.6% done] [ 15427/  1785 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [12.5% done] [  9736/  7296 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [14.7% done] [  9368/  6620 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.1% done] [  6829/  8976 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [ 10304/  1888 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [20.0% done] [  8119/  5505 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [22.5% done] [  6208/  7404 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [26.3% done] [ 10964/  3200 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  7532/  5356 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.0% done] [  9084/  2056 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.0% done] [  6044/  3440 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [32.6% done] [  6232/  5328 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [34.9% done] [  7968/  3340 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [37.2% done] [  4584/  5516 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [40.5% done] [  9544/   420 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.9% done] [  8300/   380 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [45.2% done] [  7072/  2412 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  2348/  7124 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  6108/  2552 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [50.0% done] [  3020/  4280 kb/s] [eta 00m:22s]
fio: pid=11818, got signal=6
Threads: 2: [m_m] [52.3% done] [  1789/  7258 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11819, got signal=6
Threads: 1: [m__] [55.8% done] [  6952/  1072 kb/s] [eta 00m:19s]
Threads: 1: [m__] [62.5% done] [  9040/     0 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [  7788/     0 kb/s] [eta 00m:13s]
fio: pid=11817, got signal=6

fio: (groupid=0): err= 0: pid=11817
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=34.2%, 8=64.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=0.7%, 20=3.7%, 50=39.9%, 100=8.8%
     lat (msec): 250=32.3%, 500=11.9%, 750=1.5%, 1000=0.2%, >=2000=0.3%
fio: (groupid=0): err= 0: pid=11818
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.7%, 4=31.9%, 8=63.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=2.1%, 20=3.3%, 50=14.3%, 100=25.4%
     lat (msec): 250=51.0%, 500=2.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11819
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.2%, 4=32.2%, 8=63.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.2%, 20=3.6%, 50=14.4%, 100=27.8%
     lat (msec): 250=46.8%, 500=5.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3594/2125, merge=544/123, ticks=58176/29924, in_queue=88100, util=98.89%
0.25user 0.55system 0:27.21elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2481minor)pagefaults 0swaps