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] [  5550/  7196 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [  9379/  3536 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.2% done] [  5731/  4901 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [16.2% done] [  8647/  4905 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [  7675/  4412 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.1% done] [  9520/  2669 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  8817/  2198 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.3% done] [  7736/  1613 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  9248/  1105 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [  4047/  6408 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [32.5% done] [  7749/  1430 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.1% done] [  6286/  3291 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.7% done] [  7184/  2507 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [38.1% done] [  5684/  4242 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.5% done] [  4075/  4502 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [41.9% done] [  4372/  3332 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [43.2% done] [  5168/  3445 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [45.5% done] [  5822/  1621 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.7% done] [  4888/  1897 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [47.8% done] [  3483/  4282 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [50.0% done] [  4383/  3645 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.1% done] [  3291/  3774 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [53.2% done] [  2466/  4896 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.2% done] [  2066/  4807 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.1% done] [  5115/  1377 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.0% done] [  4477/  2889 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [55.8% done] [  5603/  1991 kb/s] [eta 00m:23s]
fio: pid=14530, got signal=6
Threads: 2: [_mm] [58.8% done] [  3210/  3689 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [60.8% done] [  4587/  2096 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [62.7% done] [  3982/  3335 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14531, got signal=6
Threads: 1: [__m] [64.7% done] [  5493/  1251 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14532, got signal=6

fio: (groupid=0): err= 0: pid=14530
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.1%, 4=13.6%, 8=85.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.5%, 10=0.5%, 20=3.1%, 50=17.6%, 100=8.8%
     lat (msec): 250=62.8%, 500=5.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14531
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=13.0%, 8=86.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.6%, 20=4.2%, 50=18.3%, 100=9.1%
     lat (msec): 250=56.0%, 500=10.7%, 750=0.3%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14532
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.1%, 4=14.2%, 8=84.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.3%, 10=0.3%, 20=4.0%, 50=14.2%, 100=10.9%
     lat (msec): 250=58.4%, 500=9.1%, 750=1.0%, 1000=0.6%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3440/2232, merge=459/404, ticks=76832/38296, in_queue=115128, util=98.81%
0.09user 0.24system 0:34.57elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2524minor)pagefaults 0swaps