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] [7.3% done] [  9788/  5600 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [10.8% done] [ 14048/  2376 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [14.3% done] [ 13808/  1164 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [16.2% done] [  9796/  4124 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.9% done] [ 11092/  4308 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [20.0% done] [  5544/  6200 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [22.0% done] [ 10776/  2424 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [24.4% done] [  7080/  5696 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [28.2% done] [  7220/  7256 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [ 10288/  2056 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.2% done] [  5484/  6364 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  7432/  4728 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  5628/  4836 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  6584/  4304 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  7090/  1737 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  5172/  4997 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  4191/  5718 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  5752/  1728 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  7680/   196 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.4% done] [  4424/  5132 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.1% done] [  3020/  5176 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [57.1% done] [  5408/  1548 kb/s] [eta 00m:18s]
fio: pid=17980, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [59.5% done] [  5160/   876 kb/s] [eta 00m:17s]
fio: pid=17981, got signal=6
Threads: 1: [m__] [65.0% done] [  4304/  4936 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17979, got signal=6

fio: (groupid=0): err= 0: pid=17979
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.0%, 4=38.5%, 8=57.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=2.5%, 20=4.4%, 50=27.0%, 100=14.5%
     lat (msec): 250=35.8%, 500=12.8%, 750=1.7%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17980
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.7%, 4=27.4%, 8=70.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.9%, 20=1.4%, 50=13.9%, 100=26.2%
     lat (msec): 250=52.0%, 500=5.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17981
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.7%, 4=31.6%, 8=65.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=1.3%, 20=1.7%, 50=10.2%, 100=29.9%
     lat (msec): 250=52.3%, 500=3.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3497/2286, merge=633/217, ticks=56008/50988, in_queue=106996, util=98.74%
0.24user 0.31system 0:27.65elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps