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] [8.8% done] [  9886/  3246 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.8% done] [  8296/  4760 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [  8360/  5541 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.1% done] [  7888/  3988 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [19.4% done] [  9480/  2260 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [  3816/  6620 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [  9136/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  5960/  6052 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  3908/  6528 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  5192/  5552 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  9460/   484 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  6470/  2922 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  2764/  7928 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  7903/  1469 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  6792/  1972 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  9024/     0 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  4364/  5028 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  4786/  2662 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  4004/  2914 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  6316/  1524 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  2572/  4976 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  4536/  2474 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  2620/  4272 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  3583/  2286 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  1252/  7436 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [57.1% done] [  5996/   736 kb/s] [eta 00m:21s]
fio: pid=4141, got signal=6
Threads: 2: [m_m] [59.2% done] [  5444/  1948 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [61.2% done] [   108/  8172 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [63.3% done] [  2040/  6092 kb/s] [eta 00m:18s]
fio: pid=4140, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4142, got signal=6

fio: (groupid=0): err= 0: pid=4140
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=19.5%, 8=78.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=2.0%, 20=4.3%, 50=14.9%, 100=7.1%
     lat (msec): 250=61.9%, 500=8.4%, 750=0.6%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4141
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=1.8%, 4=17.1%, 8=80.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=1.5%, 20=3.1%, 50=18.8%, 100=4.2%
     lat (msec): 250=66.3%, 500=5.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4142
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.0%, 4=16.0%, 8=82.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.4%, 20=1.9%, 50=15.0%, 100=5.6%
     lat (msec): 250=67.5%, 500=7.3%, 750=0.2%, 1000=0.7%, >=2000=0.1%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3116/2319, merge=643/312, ticks=71568/40240, in_queue=111804, util=99.27%
0.12user 0.26system 0:33.17elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2514minor)pagefaults 0swaps