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] [12.0% done] [ 11736/  8340 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [  6616/ 13528 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [ 14172/  4496 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [  8388/ 10288 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [  9228/  7868 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 11136/  3616 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  9656/  6056 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  4864/ 11256 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  8988/  4564 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [ 10256/  4796 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  7516/  5776 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 10036/  1428 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  6944/  4412 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  4084/  7472 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  5120/  3968 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  8084/   788 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [61.3% done] [  6020/  2596 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [60.6% done] [  4692/  2824 kb/s] [eta 00m:13s]
fio: pid=28726, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28725, got signal=6
Threads: 1: [m__] [63.6% done] [  3528/  4268 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28724, got signal=6

fio: (groupid=0): err= 0: pid=28724
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.5%, 4=31.1%, 8=67.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.8%, 20=2.5%, 50=21.1%, 100=24.6%
     lat (msec): 250=47.6%, 500=2.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28725
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=4.1%, 4=34.1%, 8=61.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=2.5%, 20=2.6%, 50=13.8%, 100=30.2%
     lat (msec): 250=47.6%, 500=2.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28726
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.5%, 4=32.9%, 8=64.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=1.9%, 20=2.6%, 50=21.6%, 100=26.2%
     lat (msec): 250=45.1%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3180/2158, merge=341/280, ticks=41840/38840, in_queue=80672, util=98.81%
0.30user 0.45system 0:22.69elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2484minor)pagefaults 0swaps