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] [7.5% done] [ 11384/  5464 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [9.3% done] [ 10884/  5368 kb/s] [eta 00m:39s]
Threads: 3: [mmm] [12.5% done] [ 11908/  1904 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [14.6% done] [ 10744/  2932 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [17.1% done] [  7368/  4776 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [19.0% done] [  9320/  4564 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [22.0% done] [  4568/  9032 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [24.4% done] [  8032/  4644 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [26.8% done] [ 10196/  2356 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [28.6% done] [  6120/  6488 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [31.0% done] [  8880/  2340 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [34.1% done] [  6576/  5376 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.7% done] [  7336/  3432 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [38.1% done] [  6452/  5028 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.5% done] [  4648/  5568 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  4484/  5220 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  3596/  4908 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  3592/  5016 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  2840/  5224 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  4620/  2968 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  2164/  5668 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] [52.2% done] [  2932/  3748 kb/s] [eta 00m:22s]
fio: pid=17553, got signal=6
fio: pid=17554, got signal=6
Threads: 1: [m__] [58.1% done] [  8208/     0 kb/s] [eta 00m:18s]
Threads: 1: [m__] [61.9% done] [  6936/     0 kb/s] [eta 00m:16s]
Threads: 1: [m__] [67.5% done] [  6720/     0 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17552, got signal=6

fio: (groupid=0): err= 0: pid=17552
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.5%, 4=37.8%, 8=60.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.2%, 20=4.5%, 50=43.1%, 100=9.0%
     lat (msec): 250=26.1%, 500=14.3%, 750=1.4%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17553
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.6%, 4=35.6%, 8=61.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.7%, 20=2.8%, 50=13.7%, 100=27.0%
     lat (msec): 250=49.8%, 500=5.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17554
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.3%, 4=28.1%, 8=68.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.3%, 20=2.7%, 50=11.2%, 100=26.1%
     lat (msec): 250=55.0%, 500=3.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3537/2353, merge=449/225, ticks=55584/48808, in_queue=104392, util=98.93%
0.22user 0.34system 0:28.27elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps