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] [10.3% done] [ 12752/  2580 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [12.9% done] [ 15436/  1060 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [15.2% done] [  9676/  6236 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.2% done] [  9408/  4104 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [20.6% done] [  7724/  7324 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.2% done] [ 10712/  1864 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [23.7% done] [  8748/  3612 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.6% done] [  9056/  1756 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.5% done] [  9260/  3568 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [  3768/  7692 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [32.5% done] [  9064/  3236 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.9% done] [  8076/  3992 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  7644/  3644 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  4568/  6640 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  4040/  6520 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  7092/  2496 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  5456/  2904 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  6772/  1536 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  4540/  3816 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4492/  3468 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  3228/  4144 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25304, got signal=6
Threads: 2: [m_m] [55.8% done] [  3440/  4412 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25305, got signal=6
Threads: 1: [m__] [59.5% done] [  4520/  2908 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  8400/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25303, got signal=6

fio: (groupid=0): err= 0: pid=25303
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.0%, 4=33.2%, 8=65.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.7%, 20=2.8%, 50=35.3%, 100=10.6%
     lat (msec): 250=33.1%, 500=15.8%, 750=1.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25304
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.8%, 4=30.8%, 8=66.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=1.8%, 20=2.4%, 50=16.3%, 100=22.3%
     lat (msec): 250=51.5%, 500=5.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25305
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.6%, 4=29.7%, 8=67.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=1.1%, 20=1.8%, 50=11.2%, 100=26.8%
     lat (msec): 250=52.5%, 500=5.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3654/2056, merge=577/182, ticks=63884/54032, in_queue=117916, util=99.20%
0.18user 0.31system 0:27.69elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps