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] [ 15628/   940 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [12.9% done] [ 10308/  5092 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [16.1% done] [ 14004/   756 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [17.6% done] [  8124/  7664 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.6% done] [ 10508/  3444 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.9% done] [  9404/  4236 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.0% done] [  8236/  4780 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [26.3% done] [  7080/  6216 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [ 10460/  1660 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  6616/  5692 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  6056/  5548 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  6096/  4108 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  5884/  5276 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  6412/  3304 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  7312/  2336 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  5752/  3280 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.3% done] [  2756/  5936 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  7136/   880 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  4740/  3340 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  3492/  4256 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  4328/  2844 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32609, got signal=6
Threads: 2: [m_m] [53.3% done] [  4508/  3384 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32610, got signal=6
Threads: 1: [m__] [55.6% done] [  3324/  2272 kb/s] [eta 00m:20s]
Threads: 1: [m__] [61.9% done] [   892/  9716 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [67.5% done] [  3424/  3868 kb/s] [eta 00m:13s]
fio: pid=32608, got signal=6

fio: (groupid=0): err= 0: pid=32608
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.8%, 4=36.7%, 8=58.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.2%, 10=4.7%, 20=5.9%, 50=27.3%, 100=11.9%
     lat (msec): 250=32.8%, 500=14.9%, 750=1.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32609
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.9%, 4=32.7%, 8=63.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=1.0%, 20=2.0%, 50=16.4%, 100=25.3%
     lat (msec): 250=52.2%, 500=2.1%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32610
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.1%, 4=26.1%, 8=71.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.6%, 20=2.5%, 50=8.5%, 100=22.8%
     lat (msec): 250=61.5%, 500=3.6%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3434/2416, merge=466/242, ticks=72932/174864, in_queue=247796, util=98.97%
0.18user 0.36system 0:28.07elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps