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] [  6656/ 11216 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.8% done] [ 10380/  6272 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [15.2% done] [ 10700/  5184 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.2% done] [ 12284/  3048 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [20.6% done] [  9396/  4476 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [23.5% done] [  9108/  2524 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.7% done] [  9212/  1980 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [  8340/  3608 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  7759/  4888 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  8608/  2660 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.2% done] [  9204/  1964 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [ 11532/     0 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  7888/  3552 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  4416/  6792 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  4972/  3756 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  8284/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  3896/  5588 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3944/  4976 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  4896/  3503 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  5420/  2340 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=687, got signal=6
Threads: 2: [m_m] [52.3% done] [  6116/  1628 kb/s] [eta 00m:21s]
Threads: 2: [m_m] [54.5% done] [  3964/  4124 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=688, got signal=6
Threads: 1: [m__] [56.8% done] [  2352/  5372 kb/s] [eta 00m:19s]
Threads: 1: [m__] [61.9% done] [  7452/     0 kb/s] [eta 00m:16s]
Threads: 1: [m__] [65.9% done] [  6232/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=686, got signal=6

fio: (groupid=0): err= 0: pid=686
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.1%, 4=23.4%, 8=75.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.6%, 10=0.9%, 20=4.4%, 50=31.4%, 100=12.2%
     lat (msec): 250=36.2%, 500=12.8%, 750=0.7%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=687
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.7%, 4=29.5%, 8=67.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.8%, 10=1.4%, 20=4.3%, 50=16.7%, 100=22.0%
     lat (msec): 250=50.4%, 500=3.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=688
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.9%, 4=21.8%, 8=76.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.3%, 10=0.8%, 20=4.1%, 50=11.4%, 100=23.6%
     lat (msec): 250=55.4%, 500=3.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3884/2054, merge=496/149, ticks=64068/39956, in_queue=104024, util=99.01%
0.19user 0.38system 0:28.36elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps