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] [ 11932/   244 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.1% done] [ 10340/  2768 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.9% done] [  9640/  1968 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.7% done] [ 10468/  2836 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [  5688/  6132 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  3884/  7376 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  7264/  4108 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  6892/  3212 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  8688/   620 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.0% done] [  7008/  1892 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [  4592/  6017 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  5116/  4712 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  7196/  2028 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  4772/  2476 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [41.5% done] [  4184/  6113 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  4924/  4124 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  3656/  4464 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  4104/  3112 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  4444/  3052 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  5248/  2756 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.1% done] [  3400/  4120 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.2% done] [  3188/  3292 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [54.3% done] [  3308/  2636 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.2% done] [  4476/  1944 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.2% done] [  4732/  2020 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.0% done] [  2300/  5316 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.9% done] [  5172/  1228 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.6% done] [  3516/  3864 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15681, got signal=6
Threads: 2: [_mm] [57.4% done] [  2880/  4500 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15682, got signal=6
Threads: 1: [__m] [61.5% done] [  5900/  1392 kb/s] [eta 00m:20s]
Threads: 1: [__m] [65.4% done] [  6928/     0 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15683, got signal=6

fio: (groupid=0): err= 0: pid=15681
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.1%, 4=18.7%, 8=79.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=1.3%, 20=2.5%, 50=15.4%, 100=8.6%
     lat (msec): 250=67.0%, 500=4.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15682
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.9%, 4=17.8%, 8=79.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=2.5%, 20=1.9%, 50=15.1%, 100=4.4%
     lat (msec): 250=67.2%, 500=7.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15683
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.0%, 4=17.5%, 8=81.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.9%, 20=1.1%, 50=26.3%, 100=2.1%
     lat (msec): 250=58.5%, 500=9.2%, 750=0.1%, 1000=0.3%, >=2000=0.6%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3385/2299, merge=524/369, ticks=78148/39868, in_queue=118016, util=99.19%
0.09user 0.23system 0:34.59elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2521minor)pagefaults 0swaps