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] [9.1% done] [  6592/  7148 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [11.8% done] [  5928/  7528 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [  9048/  4660 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [  6672/  4808 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.6% done] [  8200/  4240 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.2% done] [  5584/  4968 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  6856/  5788 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  6636/  4454 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  6431/  2300 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  4824/  5695 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  5557/  4265 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.8% done] [  3694/  6533 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  6147/  3060 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  5368/  4182 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  7014/  1216 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  6837/  3032 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  4537/  3135 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3949/  3728 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3453/  4834 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  3024/  3316 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  4600/  2648 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  3530/  3864 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.3% done] [  5401/  1289 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  5092/  3056 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  4048/  2640 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [58.0% done] [  5745/   488 kb/s] [eta 00m:21s]
fio: pid=14599, got signal=6
Threads: 2: [_mm] [58.8% done] [  4892/  1196 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [62.0% done] [  6908/   280 kb/s] [eta 00m:19s]
Threads: 2: [_mm] [62.7% done] [  1322/  6837 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14600, got signal=6
Threads: 1: [__m] [67.3% done] [  3438/  4111 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14601, got signal=6

fio: (groupid=0): err= 0: pid=14599
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.6%, 4=17.9%, 8=81.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.5%, 20=2.5%, 50=17.9%, 100=11.5%
     lat (msec): 250=59.1%, 500=7.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14600
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.6%, 4=16.3%, 8=81.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=1.3%, 20=4.6%, 50=16.3%, 100=4.4%
     lat (msec): 250=63.1%, 500=8.5%, 750=0.9%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14601
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.1%, 4=14.7%, 8=83.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.5%, 20=2.2%, 50=16.7%, 100=4.5%
     lat (msec): 250=63.7%, 500=10.6%, 750=0.9%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3177/2310, merge=398/446, ticks=74112/42416, in_queue=116528, util=99.21%
0.12user 0.28system 0:33.52elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2516minor)pagefaults 0swaps