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] [ 10840/  3532 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.8% done] [  6784/  6072 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [13.9% done] [  8356/  4800 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.1% done] [  2180/ 11940 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [19.4% done] [  9772/   964 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [  9265/  2470 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.7% done] [  4304/  8324 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.8% done] [ 10096/   760 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  3512/  6116 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  5260/  4400 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  5400/  4012 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  6580/  3728 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  4100/  6592 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.0% done] [  7592/  2304 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  4268/  4596 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.0% done] [  6160/  2792 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.3% done] [  4392/  2872 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  6080/   988 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  4004/  3892 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  4904/  2820 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  3796/  2804 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  4656/  2016 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  3548/  2684 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  3548/  3420 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  4444/  2368 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.1% done] [  2412/  5376 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2645, got signal=6
Threads: 2: [_mm] [59.2% done] [  2744/  3772 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.0% done] [  5588/   800 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [62.0% done] [  5876/  1292 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [_mm] [64.0% done] [  1900/  4832 kb/s] [eta 00m:18s]
fio: pid=2646, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2647, got signal=6

fio: (groupid=0): err= 0: pid=2645
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.8%, 4=20.4%, 8=76.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=2.4%, 20=4.7%, 50=14.8%, 100=9.8%
     lat (msec): 250=61.0%, 500=5.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2646
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.7%, 4=16.5%, 8=81.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.9%, 20=3.4%, 50=15.6%, 100=5.2%
     lat (msec): 250=65.3%, 500=7.8%, 750=0.4%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2647
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=15.4%, 8=83.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=1.0%, 20=1.1%, 50=17.4%, 100=7.1%
     lat (msec): 250=64.9%, 500=7.0%, 750=0.8%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3162/2469, merge=502/342, ticks=72416/39840, in_queue=112256, util=98.93%
0.12user 0.30system 0:34.02elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2518minor)pagefaults 0swaps