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] [ 11240/  5484 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [12.9% done] [  4476/ 12236 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [16.7% done] [ 11144/  5240 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [20.0% done] [  8908/  4624 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [22.6% done] [  6696/  6512 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [25.8% done] [  4940/  8952 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [28.1% done] [  9568/  4332 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [30.3% done] [  9508/  3448 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [32.4% done] [  6992/  4636 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [36.4% done] [ 10644/  3956 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [39.4% done] [  8292/  3400 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [42.4% done] [  4952/  6984 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [44.1% done] [  5088/  5960 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [47.1% done] [  2632/  8404 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [48.6% done] [  3600/  6520 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [50.0% done] [  2460/  6320 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [52.8% done] [  3392/  5216 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [54.1% done] [  5944/  2004 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [56.8% done] [  5960/  1684 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [57.9% done] [  3672/  3828 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [59.0% done] [  6824/   936 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [61.5% done] [  2956/  5776 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [62.5% done] [  2144/  5252 kb/s] [eta 00m:15s]
fio: pid=17406, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17407, got signal=6
Threads: 1: [m__] [66.7% done] [  2888/  4872 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17405, got signal=6

fio: (groupid=0): err= 0: pid=17405
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.4%, 4=36.5%, 8=58.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.5%, 10=2.6%, 20=4.3%, 50=18.5%, 100=16.4%
     lat (msec): 250=44.5%, 500=11.3%, 750=0.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17406
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.8%, 4=32.2%, 8=64.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=0.7%, 20=2.0%, 50=13.0%, 100=20.0%
     lat (msec): 250=56.8%, 500=6.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17407
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.6%, 4=34.2%, 8=61.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.2%, 10=0.5%, 20=3.0%, 50=12.2%, 100=22.8%
     lat (msec): 250=55.0%, 500=5.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2876/2800, merge=570/139, ticks=57332/61952, in_queue=119284, util=98.98%
0.28user 0.40system 0:27.28elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2502minor)pagefaults 0swaps