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] [6.8% done] [  5977/ 10215 kb/s] [eta 00m:41s]
Threads: 3: [mmm] [10.0% done] [ 11004/  5917 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [12.5% done] [ 11765/  2477 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [15.4% done] [  9142/  3896 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [17.9% done] [ 12498/  2206 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [20.0% done] [  7209/  6897 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [22.5% done] [  9171/  2625 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [25.6% done] [ 10189/  2904 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [28.2% done] [  5030/  7964 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  3283/  8001 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.7% done] [  6615/  5140 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [34.1% done] [  3278/ 10159 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  5006/  6050 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.0% done] [  1735/ 10922 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  4282/  5050 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.0% done] [  8659/  1336 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  3819/  4624 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  5958/  2257 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4132/  4742 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.7% done] [  2872/  4904 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [54.8% done] [  4226/  4006 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14507, got signal=6
Threads: 2: [m_m] [57.1% done] [  6379/     0 kb/s] [eta 00m:18s]
Threads: 2: [m_m] [61.0% done] [  4433/  3478 kb/s] [eta 00m:16s]
Threads: 2: [m_m] [63.4% done] [  6517/     0 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [67.5% done] [  4274/  3469 kb/s] [eta 00m:13s]
Threads: 2: [m_m] [66.7% done] [     0/     0 kb/s] [eta 00m:14s]
Threads: 2: [m_m] [67.4% done] [     0/     0 kb/s] [eta 00m:14s]
fio: pid=14508, got signal=6
Threads: 2: [m_m] [67.4% done] [     0/     0 kb/s] [eta 00m:15s]
fio: pid=14506, got signal=6

fio: (groupid=0): err= 0: pid=14506
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=3.0%, 4=29.6%, 8=67.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.6%, 10=0.9%, 20=6.1%, 50=22.6%, 100=20.2%
     lat (msec): 250=34.2%, 500=13.4%, 750=0.9%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14507
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.1%, 4=30.3%, 8=67.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.5%, 10=0.5%, 20=2.7%, 50=17.5%, 100=23.7%
     lat (msec): 250=51.0%, 500=3.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14508
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.5%, 4=21.7%, 8=77.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=1.6%, 50=8.2%, 100=28.1%
     lat (msec): 250=58.1%, 500=2.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3226/2554, merge=249/373, ticks=57680/129060, in_queue=186740, util=87.08%
0.22user 0.28system 0:31.59elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps