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] [9.1% done] [  9460/  6192 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [12.1% done] [  9788/  6596 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [15.2% done] [ 10672/  4376 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [17.1% done] [ 10068/  4896 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [  6744/  7428 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [21.6% done] [  7154/  5977 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  9788/  2412 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [ 10712/  2328 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  4984/  8848 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  7948/  3388 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  7736/  3316 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.8% done] [  5212/  6336 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  3528/  8628 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.0% done] [  2168/  9348 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  9428/     0 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  6408/  2792 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [44.2% done] [  3352/  6136 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  4172/  5356 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3932/  3480 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30808, got signal=6
Threads: 2: [m_m] [48.9% done] [  5336/  1180 kb/s] [eta 00m:23s]
Threads: 2: [m_m] [52.3% done] [  2540/  6356 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30809, got signal=6
Threads: 1: [m__] [54.5% done] [  5672/  1156 kb/s] [eta 00m:20s]
Threads: 1: [m__] [61.0% done] [  8776/     0 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  3960/  4392 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30807, got signal=6

fio: (groupid=0): err= 0: pid=30807
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.4%, 4=32.9%, 8=64.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=1.2%, 20=5.9%, 50=32.3%, 100=11.2%
     lat (msec): 250=34.0%, 500=12.8%, 750=1.1%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30808
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.0%, 4=37.3%, 8=57.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.1%, 10=1.9%, 20=2.8%, 50=21.5%, 100=22.1%
     lat (msec): 250=46.0%, 500=3.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30809
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=2.5%, 4=34.5%, 8=62.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=1.3%, 20=2.1%, 50=15.0%, 100=29.6%
     lat (msec): 250=46.7%, 500=4.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3296/2507, merge=391/168, ticks=54852/41692, in_queue=96540, util=99.34%
0.21user 0.33system 0:27.29elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps