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] [11.5% done] [ 12748/  3832 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [14.3% done] [ 14135/  1772 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [17.9% done] [ 10314/  7085 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [20.7% done] [  4611/  9550 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [23.3% done] [ 11606/  2875 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [27.6% done] [  9432/  2823 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [29.0% done] [  5592/  5265 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [31.2% done] [  5348/  7872 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [33.3% done] [  2945/ 11854 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [35.3% done] [  6242/  5864 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [36.1% done] [  7199/  4596 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.9% done] [  9428/  1843 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  6258/  4190 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.4% done] [  3182/  8373 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [45.9% done] [  5915/  4162 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.6% done] [  6915/  1646 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.8% done] [  4734/  4501 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [53.8% done] [  3784/  5704 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [55.0% done] [  4068/  3895 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [56.1% done] [  2138/  5722 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4141, got signal=6
Threads: 2: [mm_] [58.5% done] [  2156/  5534 kb/s] [eta 00m:17s]
Threads: 2: [mm_] [62.5% done] [  3670/  3977 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4140, got signal=6
Threads: 1: [m__] [65.0% done] [  6502/     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=4139, got signal=6

fio: (groupid=0): err= 0: pid=4139
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.8%, 4=40.2%, 8=56.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.0%, 20=4.8%, 50=25.7%, 100=15.9%
     lat (msec): 250=37.6%, 500=13.9%, 750=0.6%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4140
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.2%, 4=34.1%, 8=63.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.1%, 20=3.1%, 50=15.8%, 100=22.9%
     lat (msec): 250=51.4%, 500=5.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4141
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.9%, 4=36.0%, 8=59.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=0.5%, 20=4.6%, 50=12.7%, 100=28.7%
     lat (msec): 250=47.9%, 500=4.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3199/2402, merge=514/375, ticks=58124/109748, in_queue=167872, util=98.86%
0.18user 0.32system 0:27.20elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2481minor)pagefaults 0swaps