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] [6.1% done] [ 13812/  2756 kb/s] [eta 00m:46s]
Threads: 3: [mmm] [8.2% done] [  8708/  8980 kb/s] [eta 00m:45s]
Threads: 3: [mmm] [10.4% done] [  6640/  9084 kb/s] [eta 00m:43s]
Threads: 3: [mmm] [15.0% done] [ 10892/  2984 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [17.1% done] [  7740/  4884 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [19.5% done] [  6016/  9248 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [23.1% done] [  7316/  5308 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [26.3% done] [  7196/  6224 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  1696/ 10376 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [  8124/  3328 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [ 10072/  1612 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.8% done] [  5008/  7584 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  4200/  7412 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.1% done] [  3304/  8216 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  2260/  8412 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.4% done] [  5268/  3880 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.7% done] [  6212/  2608 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  5076/  3060 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  5348/  1716 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  3056/  4004 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=750, got signal=6
Threads: 2: [m_m] [56.1% done] [  2808/  5088 kb/s] [eta 00m:18s]
Threads: 2: [m_m] [58.5% done] [  4664/  2700 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=751, got signal=6
Threads: 1: [m__] [61.0% done] [  2540/  5796 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  3640/  4404 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=749, got signal=6

fio: (groupid=0): err= 0: pid=749
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.8%, 4=36.9%, 8=60.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=2.3%, 20=6.2%, 50=26.7%, 100=15.5%
     lat (msec): 250=31.5%, 500=13.8%, 750=2.1%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=750
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.9%, 4=31.0%, 8=66.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.2%, 10=1.3%, 20=3.7%, 50=15.8%, 100=22.9%
     lat (msec): 250=53.0%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=751
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.6%, 4=30.3%, 8=67.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=1.6%, 20=3.9%, 50=11.8%, 100=25.6%
     lat (msec): 250=50.9%, 500=4.9%, 750=0.5%, 1000=0.3%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2778/2925, merge=448/291, ticks=48420/107048, in_queue=155468, util=99.12%
0.20user 0.32system 0:27.16elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2500minor)pagefaults 0swaps