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: 0
Threads: 3
Threads: 3
Threads: 3: [mmm] [6.4% done] [  4517/  8810 kb/s] [eta 00m:44s]
Threads: 3: [mmm] [9.5% done] [  8266/  5312 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [12.2% done] [  4667/  8223 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [14.6% done] [ 11980/   378 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [17.5% done] [ 10305/  2554 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [20.5% done] [  8570/  3284 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [22.5% done] [  7424/  3111 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [25.6% done] [  6707/  4856 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [28.2% done] [  3225/  7565 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [29.3% done] [  7616/  2264 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  4407/  3757 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  5419/  4190 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [35.7% done] [  5135/  5391 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [37.2% done] [  6537/  2437 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [40.5% done] [  6892/  3079 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.9% done] [  7553/   657 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.2% done] [  9483/     0 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  7479/  1106 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  4451/  3068 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  7334/   476 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.1% done] [  7502/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.2% done] [  7568/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.2% done] [  5096/  3144 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.3% done] [  2784/  3468 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.1% done] [  4295/  2839 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.0% done] [  2000/  5412 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5340, got signal=6
Threads: 2: [_mm] [56.6% done] [  4416/  1836 kb/s] [eta 00m:23s]
Threads: 2: [_mm] [58.5% done] [  3032/  4362 kb/s] [eta 00m:22s]
Threads: 2: [_mm] [59.3% done] [  6968/     0 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5342, got signal=6
Threads: 1: [_m_] [63.5% done] [  3445/  4227 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5341, got signal=6

fio: (groupid=0): err= 0: pid=5340
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.9%, 4=19.6%, 8=78.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.1%, 10=0.7%, 20=3.9%, 50=16.2%, 100=9.9%
     lat (msec): 250=60.4%, 500=6.9%, 750=0.4%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5341
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.5%, 4=17.3%, 8=80.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.1%, 10=0.5%, 20=3.4%, 50=19.8%, 100=5.6%
     lat (msec): 250=56.6%, 500=12.1%, 750=1.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5342
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=11.3%, 8=88.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=14.8%, 100=8.6%
     lat (msec): 250=65.0%, 500=8.6%, 750=0.8%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3699/1931, merge=580/269, ticks=84928/132944, in_queue=166004, util=99.69%
0.09user 0.33system 0:35.35elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2509minor)pagefaults 0swaps