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] [7.5% done] [ 14884/  2496 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [10.8% done] [ 15760/   972 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.2% done] [  9268/  5616 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [15.4% done] [  9388/  4792 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [18.4% done] [  7780/  8104 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [20.5% done] [  8172/  2888 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.7% done] [  9732/  2088 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.0% done] [  7844/  5944 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  7684/  4180 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  9660/  1816 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  5096/  5908 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.8% done] [  4972/  6700 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [39.5% done] [  8180/  1252 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  8304/  2660 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  4612/  6356 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.2% done] [  7056/  2332 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.7% done] [  7056/  1416 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  1228/  7536 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  4344/  3552 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  3164/  4644 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.5% done] [  3720/  4704 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11992, got signal=6
Threads: 2: [m_m] [54.5% done] [  3404/  4536 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11993, got signal=6
Threads: 1: [m__] [59.5% done] [  3948/  4160 kb/s] [eta 00m:17s]
Threads: 1: [m__] [63.4% done] [  6276/   880 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11991, got signal=6

fio: (groupid=0): err= 0: pid=11991
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.9%, 4=33.5%, 8=64.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.6%, 20=5.8%, 50=31.6%, 100=14.4%
     lat (msec): 250=31.3%, 500=12.6%, 750=1.7%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11992
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.4%, 4=33.3%, 8=62.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=1.2%, 20=4.9%, 50=14.9%, 100=22.9%
     lat (msec): 250=52.3%, 500=3.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11993
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.2%, 4=31.3%, 8=66.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.7%, 20=2.9%, 50=11.5%, 100=26.4%
     lat (msec): 250=52.9%, 500=4.4%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3561/2254, merge=609/137, ticks=59900/37460, in_queue=97360, util=99.13%
0.19user 0.31system 0:27.84elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2497minor)pagefaults 0swaps