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] [ 12796/  3172 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [ 10728/  4968 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [ 13564/  1576 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.2% done] [  5088/ 11028 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [21.2% done] [  9048/  3828 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [23.5% done] [  8920/  5012 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [26.5% done] [  5304/  7812 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [29.4% done] [ 11836/   664 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [31.4% done] [  9092/  3500 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [35.3% done] [  4508/  8300 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [37.1% done] [  4076/  8820 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.2% done] [  2648/  9836 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [42.9% done] [  5364/  5592 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [44.4% done] [  4796/  5184 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [47.2% done] [  7564/  2516 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [48.6% done] [  5224/  4304 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [   968/  8708 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  4424/  3924 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.8% done] [  7856/     0 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [55.0% done] [  5444/  1912 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [56.1% done] [  4460/  2172 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25246, got signal=6
Threads: 2: [m_m] [60.0% done] [  1956/  6704 kb/s] [eta 00m:16s]
Threads: 2: [m_m] [62.5% done] [  3888/  2924 kb/s] [eta 00m:15s]
Threads: 2: [m_m] [65.0% done] [  3768/  2408 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25245, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25247, got signal=6

fio: (groupid=0): err= 0: pid=25245
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=4.2%, 4=39.8%, 8=55.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=2.5%, 20=5.1%, 50=21.6%, 100=19.5%
     lat (msec): 250=38.3%, 500=10.1%, 750=1.0%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25246
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=2.8%, 4=32.9%, 8=63.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.4%, 20=2.9%, 50=13.9%, 100=25.3%
     lat (msec): 250=52.6%, 500=2.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25247
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.1%, 4=31.7%, 8=65.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.9%, 20=2.7%, 50=13.0%, 100=26.5%
     lat (msec): 250=48.5%, 500=7.2%, 750=0.7%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3195/2695, merge=377/328, ticks=58344/48164, in_queue=106508, util=99.21%
0.22user 0.44system 0:27.82elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2501minor)pagefaults 0swaps