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] [8.1% done] [  5816/  9312 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [11.1% done] [ 11504/  5216 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.9% done] [ 10132/  6248 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.1% done] [  9740/  2312 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.9% done] [ 12223/   920 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.6% done] [ 10244/  3100 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.0% done] [  8079/  3481 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [25.6% done] [  9179/  4055 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [26.8% done] [ 10378/  2369 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [28.6% done] [  8996/  1816 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [30.2% done] [  6859/  6757 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [32.6% done] [  6765/  4685 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [34.9% done] [ 10810/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [38.1% done] [ 10861/     0 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [41.5% done] [  4030/  7594 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  4591/  4868 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  5445/  2190 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  7736/   345 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3746/  4665 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  4490/  4412 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [50.0% done] [  2603/  5255 kb/s] [eta 00m:23s]
fio: pid=2938, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [53.3% done] [  1958/  6192 kb/s] [eta 00m:21s]
fio: pid=2939, got signal=6
Threads: 1: [m__] [59.5% done] [  8411/     0 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  6343/  2035 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2937, got signal=6

fio: (groupid=0): err= 0: pid=2937
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.6%, 4=26.6%, 8=71.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.6%, 10=2.0%, 20=6.4%, 50=33.0%, 100=10.9%
     lat (msec): 250=29.8%, 500=15.4%, 750=0.7%, 1000=0.5%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=2938
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.3%, 4=24.2%, 8=74.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=1.1%, 10=1.2%, 20=3.4%, 50=11.4%, 100=25.5%
     lat (msec): 250=54.5%, 500=2.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2939
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.9%, 4=29.2%, 8=68.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.7%, 20=3.2%, 50=13.4%, 100=29.2%
     lat (msec): 250=47.4%, 500=5.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3378/2326, merge=640/80, ticks=60420/92740, in_queue=153156, util=97.93%
0.22user 0.35system 0:27.72elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2491minor)pagefaults 0swaps