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] [ 13520/  2284 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [11.8% done] [ 10544/  5332 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [15.2% done] [ 11780/  4928 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [17.6% done] [  3932/ 11172 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.6% done] [ 11440/  1072 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.9% done] [  8884/  5156 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [26.5% done] [  9728/  3212 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [27.8% done] [  6616/  5828 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  9940/  2016 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  7684/  5552 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  5552/  6800 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.8% done] [  6320/  4696 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.5% done] [  7436/  4372 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.1% done] [  2476/  9288 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.6% done] [  4624/  5812 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [45.0% done] [  4948/  4092 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.5% done] [  5312/  3220 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  2236/  5916 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4948/  2688 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  4136/  2440 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17149, got signal=6
Threads: 2: [m_m] [53.5% done] [  7284/   484 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [57.1% done] [  7664/     0 kb/s] [eta 00m:18s]
Threads: 2: [m_m] [61.0% done] [  3108/  5368 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17150, got signal=6
Threads: 1: [m__] [65.0% done] [  6112/  1008 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17148, got signal=6

fio: (groupid=0): err= 0: pid=17148
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.3%, 4=34.3%, 8=62.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.2%, 10=0.7%, 20=3.6%, 50=28.0%, 100=14.4%
     lat (msec): 250=37.0%, 500=13.7%, 750=0.5%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17149
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.0%, 4=31.2%, 8=65.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.1%, 10=0.4%, 20=2.8%, 50=15.4%, 100=25.5%
     lat (msec): 250=51.4%, 500=3.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17150
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.9%, 4=33.1%, 8=63.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.7%, 20=2.2%, 50=12.2%, 100=27.0%
     lat (msec): 250=52.0%, 500=5.0%, 750=0.2%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3420/2278, merge=459/210, ticks=57060/61236, in_queue=118288, util=99.15%
0.26user 0.36system 0:27.70elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps