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] [  8036/  7840 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [12.1% done] [ 11252/  4688 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.2% done] [ 11260/  4548 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [20.7% done] [  8672/  7664 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [22.6% done] [  9328/  5104 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [25.0% done] [  8368/  3744 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [27.3% done] [  9433/  2037 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [28.6% done] [  5388/  6352 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [30.6% done] [  8492/  3824 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  5340/  7316 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.1% done] [  4812/  7876 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.8% done] [ 11256/   648 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.5% done] [  7792/  3732 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [42.1% done] [  4224/  6448 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  7812/  2768 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.0% done] [  6504/  2472 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  7619/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  4004/  3644 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  7340/   748 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.7% done] [  8020/  1464 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [54.8% done] [  4284/  2484 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1310, got signal=6
Threads: 2: [m_m] [57.1% done] [  5420/  2316 kb/s] [eta 00m:18s]
Threads: 2: [m_m] [59.5% done] [  2576/  4276 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1311, got signal=6
Threads: 1: [m__] [65.0% done] [  3708/  4532 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1309, got signal=6

fio: (groupid=0): err= 0: pid=1309
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.1%, 4=34.5%, 8=61.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.2%, 10=2.2%, 20=7.8%, 50=23.1%, 100=14.7%
     lat (msec): 250=37.0%, 500=12.2%, 750=0.9%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1310
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.8%, 4=30.4%, 8=67.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=1.0%, 20=1.9%, 50=13.7%, 100=26.8%
     lat (msec): 250=52.3%, 500=3.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1311
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.8%, 4=29.3%, 8=67.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=1.0%, 20=2.3%, 50=12.0%, 100=27.0%
     lat (msec): 250=51.3%, 500=4.2%, 750=0.4%, 1000=0.0%, >=2000=0.5%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3587/2117, merge=535/207, ticks=64696/40896, in_queue=105592, util=99.20%
0.25user 0.43system 0:27.67elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps