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] [9.4% done] [  9317/  6895 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [11.8% done] [  8744/  7635 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.3% done] [  6320/  9518 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [16.7% done] [ 10053/  3616 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [18.4% done] [  4855/  7952 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [20.5% done] [  7350/  6806 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.7% done] [  5542/  9102 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  5697/  6611 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.5% done] [  7757/  5067 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.6% done] [ 13133/   247 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  5721/  4693 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.8% done] [  7586/  5038 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.5% done] [  5977/  6091 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [42.1% done] [  5014/  5266 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.6% done] [  7497/  3315 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  3949/  5067 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  6765/  1418 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  6729/  2295 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  8045/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.4% done] [  3002/  6473 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.3% done] [  4933/  2982 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25323, got signal=6
Threads: 2: [m_m] [55.8% done] [  5656/  1686 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25324, got signal=6
Threads: 1: [m__] [58.1% done] [  2905/  3766 kb/s] [eta 00m:18s]
Threads: 1: [m__] [63.4% done] [  7793/     0 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25322, got signal=6

fio: (groupid=0): err= 0: pid=25322
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.7%, 4=29.6%, 8=68.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.5%, 10=1.1%, 20=5.2%, 50=31.2%, 100=14.5%
     lat (msec): 250=31.9%, 500=13.3%, 750=1.7%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25323
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.6%, 4=25.0%, 8=73.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.7%, 10=0.7%, 20=3.5%, 50=13.3%, 100=25.4%
     lat (msec): 250=51.1%, 500=4.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25324
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.5%, 4=23.0%, 8=75.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.5%, 10=1.0%, 20=2.3%, 50=11.0%, 100=30.9%
     lat (msec): 250=48.2%, 500=5.0%, 750=0.6%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3390/2319, merge=596/359, ticks=55044/66940, in_queue=121984, util=98.80%
0.25user 0.46system 0:27.53elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2491minor)pagefaults 0swaps