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] [8.3% done] [ 12512/  1136 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [10.8% done] [  6888/  6128 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.5% done] [  6036/  7324 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.7% done] [  4388/  9180 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [18.9% done] [  6180/  5272 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.1% done] [  8184/  2396 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [24.3% done] [  8060/  3488 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  6620/  3948 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  5888/  5124 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  5056/  4132 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  4760/  6838 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  6648/  2900 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  5640/  3924 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  4080/  6172 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  7548/  1068 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  6888/  2036 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  6416/  1444 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  4668/  2356 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  5180/  2740 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  2620/  5320 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  1812/  6272 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  5488/  1284 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.2% done] [  6944/   484 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.2% done] [  6232/  1108 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.1% done] [  3504/  2652 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14378, got signal=6
Threads: 2: [_mm] [56.0% done] [  2440/  4532 kb/s] [eta 00m:22s]
Threads: 2: [_mm] [58.0% done] [  3972/  2064 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [60.0% done] [  7464/     0 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.8% done] [  3716/  3792 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14379, got signal=6
Threads: 1: [__m] [65.3% done] [    36/  8968 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14380, got signal=6

fio: (groupid=0): err= 0: pid=14378
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.8%, 4=14.6%, 8=84.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=1.0%, 20=3.3%, 50=19.9%, 100=11.6%
     lat (msec): 250=58.4%, 500=5.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14379
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.0%, 4=14.4%, 8=84.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.9%, 20=4.6%, 50=19.0%, 100=9.0%
     lat (msec): 250=57.5%, 500=7.2%, 750=1.0%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14380
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.1%, 4=17.4%, 8=81.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.5%, 10=0.4%, 20=6.5%, 50=13.3%, 100=11.0%
     lat (msec): 250=58.8%, 500=6.6%, 750=1.7%, 1000=0.5%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3245/2345, merge=436/302, ticks=71624/39688, in_queue=111312, util=99.30%
0.09user 0.27system 0:33.30elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2514minor)pagefaults 0swaps