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] [  5462/  9506 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.1% done] [ 12032/  3552 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.2% done] [ 13168/  2000 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [17.1% done] [ 11645/  3206 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [  9452/  4112 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.1% done] [  8248/  5060 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [22.0% done] [  3744/  9848 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [25.0% done] [  9172/  3960 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [27.5% done] [ 11808/  1560 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [ 10041/   756 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  4212/  8756 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [35.9% done] [  4984/  8264 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  5400/  5776 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.0% done] [  6388/  4868 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  6365/  3428 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.2% done] [  5900/  3165 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  3928/  5032 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  6181/  3154 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  4336/  3708 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  4564/  3056 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.1% done] [  2858/  6586 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1022, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1021, got signal=6
Threads: 1: [m__] [58.5% done] [  2904/  5156 kb/s] [eta 00m:17s]
Threads: 1: [m__] [64.1% done] [  3760/  5056 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1020, got signal=6

fio: (groupid=0): err= 0: pid=1020
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.0%, 4=40.3%, 8=54.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.5%, 4=0.1%, 10=1.4%, 20=6.2%, 50=32.4%, 100=11.5%
     lat (msec): 250=31.1%, 500=14.2%, 750=1.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1021
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.7%, 4=30.5%, 8=65.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=1.5%, 20=2.7%, 50=11.4%, 100=25.3%
     lat (msec): 250=52.7%, 500=4.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1022
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.3%, 4=31.5%, 8=64.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=1.3%, 20=2.1%, 50=15.7%, 100=24.7%
     lat (msec): 250=51.3%, 500=3.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3177/2574, merge=419/318, ticks=58644/46452, in_queue=105092, util=98.60%
0.24user 0.42system 0:26.89elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps