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] [9.1% done] [  8956/  3736 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [11.8% done] [  8824/  4640 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [  8212/  4708 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.1% done] [  4404/  8300 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [  4364/  7864 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.6% done] [  6772/  4640 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  9790/  1450 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  6352/  3667 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  8336/  2192 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  8048/  1704 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  4748/  5404 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  4516/  5124 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  7620/  2356 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  1844/  7992 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  2456/  7420 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  3136/  6312 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  4956/  3212 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  6404/  1284 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  4976/  2296 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  4196/  3632 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  4644/  1908 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  6444/   748 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  5884/   312 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.5% done] [  3788/  3332 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [   464/  7888 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.3% done] [  4484/  2408 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [60.4% done] [  5780/   756 kb/s] [eta 00m:19s]
fio: pid=14208, got signal=6
Threads: 2: [m_m] [61.2% done] [  4008/  2076 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [62.0% done] [  4288/  1704 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14207, got signal=6
Threads: 1: [__m] [66.7% done] [  7108/   212 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14209, got signal=6

fio: (groupid=0): err= 0: pid=14207
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=0.8%, 4=16.8%, 8=82.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=2.1%, 50=20.4%, 100=7.3%
     lat (msec): 250=62.4%, 500=5.9%, 750=0.8%, 1000=0.4%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=14208
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.7%, 4=19.2%, 8=78.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=0.9%, 20=3.2%, 50=16.3%, 100=5.8%
     lat (msec): 250=69.0%, 500=3.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14209
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=15.1%, 8=84.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.5%, 20=1.6%, 50=15.8%, 100=3.6%
     lat (msec): 250=71.1%, 500=5.7%, 750=1.0%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3343/2174, merge=416/456, ticks=69632/42080, in_queue=111712, util=98.67%
0.06user 0.21system 0:33.81elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2514minor)pagefaults 0swaps