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] [9.4% done] [ 10732/  5667 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [12.9% done] [ 12866/  5261 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [14.3% done] [  8282/  6852 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.1% done] [  9684/  4734 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [19.4% done] [ 10165/  2985 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.5% done] [  5754/  5198 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [25.0% done] [  8294/  4773 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  4399/  9160 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.4% done] [  6506/  7061 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [33.3% done] [  7904/  3264 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  4875/  6325 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.4% done] [  4056/  9743 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [44.1% done] [  6482/  4092 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [47.1% done] [  3721/  8420 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [48.6% done] [  7750/  2008 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [50.0% done] [  5974/  3020 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [52.8% done] [  5679/  3284 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [53.8% done] [  3131/  5080 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [56.4% done] [  4478/  3615 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [57.5% done] [  3295/  5641 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [58.5% done] [  3946/  4249 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15063, got signal=6
Threads: 2: [m_m] [59.5% done] [  2319/  3879 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15064, got signal=6
Threads: 1: [m__] [65.0% done] [   543/  7912 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15062, got signal=6

fio: (groupid=0): err= 0: pid=15062
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.3%, 2=5.4%, 4=45.3%, 8=48.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.9%, 4=0.1%, 10=0.7%, 20=9.8%, 50=28.2%, 100=15.2%
     lat (msec): 250=27.7%, 500=14.1%, 750=1.8%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15063
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.5%, 4=29.2%, 8=67.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=0.2%, 20=4.2%, 50=9.8%, 100=27.3%
     lat (msec): 250=54.5%, 500=3.0%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15064
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.8%, 4=37.7%, 8=57.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.0%, 10=0.2%, 20=4.1%, 50=13.9%, 100=24.1%
     lat (msec): 250=48.9%, 500=6.3%, 750=0.7%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2927/2813, merge=504/353, ticks=58732/53084, in_queue=111812, util=99.04%
0.22user 0.40system 0:26.91elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps