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] [8.1% done] [ 10008/  6298 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.0% done] [  8443/  8196 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [11.9% done] [ 12027/  2466 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [15.8% done] [  9671/  6725 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [19.4% done] [  5782/  7151 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.1% done] [  8878/  4051 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [24.3% done] [  4888/  8508 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  6428/  5753 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.6% done] [  7765/  4892 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [31.6% done] [  3494/ 10426 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  4445/  6761 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.8% done] [  4937/  8537 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.5% done] [  6278/  5725 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  3453/  7870 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  3295/  6757 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  5863/  3088 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  5928/  2897 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  4851/  2779 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  4043/  3937 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  3072/  5140 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.5% done] [  6501/   849 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6890, got signal=6
Threads: 2: [m_m] [54.5% done] [  2969/  3628 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6891, got signal=6
Threads: 1: [m__] [58.1% done] [  2645/  3661 kb/s] [eta 00m:18s]
Threads: 1: [m__] [63.4% done] [  4063/  5623 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6889, got signal=6

fio: (groupid=0): err= 0: pid=6889
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.0%, 4=32.0%, 8=65.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.3%, 10=1.5%, 20=6.5%, 50=27.0%, 100=15.4%
     lat (msec): 250=32.4%, 500=12.9%, 750=3.0%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6890
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.9%, 4=36.7%, 8=60.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.5%, 10=1.3%, 20=5.2%, 50=13.4%, 100=28.7%
     lat (msec): 250=43.8%, 500=5.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6891
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=1.3%, 4=27.3%, 8=71.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.5%, 20=2.8%, 50=11.5%, 100=31.3%
     lat (msec): 250=48.8%, 500=4.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2869/2906, merge=408/158, ticks=50512/102948, in_queue=153456, util=99.03%
0.32user 0.38system 0:27.37elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2526minor)pagefaults 0swaps