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] [6.7% done] [ 15644/  1368 kb/s] [eta 00m:42s]
Threads: 3: [mmm] [8.9% done] [ 11076/  6564 kb/s] [eta 00m:41s]
Threads: 3: [mmm] [10.4% done] [  9752/  6668 kb/s] [eta 00m:43s]
Threads: 3: [mmm] [13.3% done] [   836/ 15114 kb/s] [eta 00m:39s]
Threads: 3: [mmm] [17.1% done] [  9916/  4708 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [19.5% done] [  8728/  3568 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [20.9% done] [ 10020/  2364 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [24.4% done] [  2236/ 10816 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [26.2% done] [  9340/  3060 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [27.9% done] [  8056/  2664 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [30.2% done] [  6532/  5196 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [34.1% done] [  4980/  7056 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  4324/  6592 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  8020/  2640 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  3996/  6396 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  7452/  1968 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  8492/   816 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  1141/  8788 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  2464/  5508 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1160, got signal=6
Threads: 2: [mm_] [50.0% done] [  1576/  7004 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [52.3% done] [  5104/  2864 kb/s] [eta 00m:21s]
fio: pid=1159, got signal=6
Threads: 1: [m__] [58.5% done] [  5112/  4356 kb/s] [eta 00m:17s]
Threads: 1: [m__] [64.1% done] [  7128/  1000 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1158, got signal=6

fio: (groupid=0): err= 0: pid=1158
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.2%, 4=34.1%, 8=62.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=2.9%, 20=7.6%, 50=34.2%, 100=11.7%
     lat (msec): 250=28.3%, 500=11.6%, 750=1.7%, 1000=0.2%, >=2000=0.4%
fio: (groupid=0): err= 0: pid=1159
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.3%, 4=28.4%, 8=68.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.6%, 10=1.7%, 20=3.4%, 50=16.2%, 100=25.9%
     lat (msec): 250=45.8%, 500=5.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1160
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.9%, 4=31.3%, 8=66.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=1.6%, 20=4.9%, 50=16.9%, 100=24.6%
     lat (msec): 250=48.9%, 500=2.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2867/2867, merge=356/397, ticks=46812/50632, in_queue=97440, util=99.15%
0.26user 0.46system 0:26.68elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps