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] [8.6% done] [ 13126/   271 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [10.8% done] [  7589/  4919 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [14.7% done] [  7636/  5053 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [ 10121/  2386 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  6695/  5163 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  8503/  2225 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  7215/  4174 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  9995/   409 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  3883/  5068 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  7605/  1437 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  6478/  3639 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  7884/  1256 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  5439/  3859 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  7443/  1295 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  6656/  2752 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  5938/  2826 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  6084/  1816 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  5208/  1124 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.8% done] [  3392/  5440 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [50.0% done] [  4412/  3020 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.1% done] [  3596/  4136 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [53.2% done] [  4996/  1228 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.2% done] [  4236/  3240 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.1% done] [  3824/  2628 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.0% done] [  3260/  3896 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.9% done] [  6248/   900 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14210, got signal=6
Threads: 2: [_mm] [57.7% done] [  6632/   204 kb/s] [eta 00m:22s]
Threads: 2: [_mm] [59.6% done] [  5444/   980 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [61.5% done] [  5940/  1772 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [_mm] [63.5% done] [  3259/  4124 kb/s] [eta 00m:19s]
fio: pid=14211, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [__m] [66.7% done] [  5896/     0 kb/s] [eta 00m:17s]
fio: pid=14212, got signal=6

fio: (groupid=0): err= 0: pid=14210
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.7%, 4=14.3%, 8=84.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.6%, 20=3.0%, 50=17.0%, 100=10.0%
     lat (msec): 250=62.1%, 500=6.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14211
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.8%, 4=12.4%, 8=86.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.1%, 20=3.9%, 50=18.2%, 100=7.1%
     lat (msec): 250=58.9%, 500=10.6%, 750=0.4%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14212
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=10.3%, 8=89.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=3.1%, 50=17.0%, 100=7.8%
     lat (msec): 250=58.7%, 500=11.1%, 750=1.0%, 1000=0.6%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3831/1721, merge=563/469, ticks=88100/31992, in_queue=120092, util=98.70%
0.10user 0.23system 0:34.63elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2509minor)pagefaults 0swaps