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] [  8014/  5253 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [ 10117/  2780 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [  9716/  3682 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.2% done] [  7467/  4395 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [  7317/  4722 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.6% done] [  6947/  5194 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  4607/  6492 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  8759/  2306 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  6098/  4076 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  3473/  7168 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [  4186/  6078 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.1% done] [  6951/  2166 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  7683/  1882 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  5758/  3969 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [41.5% done] [  4891/  4210 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  6829/  1929 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  4805/  3682 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.5% done] [  4216/  3740 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [47.7% done] [  4640/  3355 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  3456/  3732 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  6236/   856 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.3% done] [  4284/  2986 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  3600/  2464 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  3548/  2176 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.4% done] [  1040/  6448 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [59.6% done] [  1672/  6616 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [60.4% done] [  5300/  1840 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7981, got signal=6
Threads: 2: [m_m] [62.5% done] [  4740/  3100 kb/s] [eta 00m:18s]
Threads: 2: [m_m] [64.0% done] [  3492/  3268 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7980, got signal=6
Threads: 1: [__m] [66.0% done] [  3300/  3408 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7982, got signal=6

fio: (groupid=0): err= 0: pid=7980
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.2%, 4=19.0%, 8=79.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.8%, 20=3.1%, 50=17.2%, 100=6.6%
     lat (msec): 250=63.1%, 500=8.1%, 750=0.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7981
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.4%, 4=17.3%, 8=81.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=1.3%, 20=3.0%, 50=15.1%, 100=5.2%
     lat (msec): 250=68.0%, 500=6.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7982
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.9%, 4=16.8%, 8=81.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.8%, 20=2.9%, 50=13.0%, 100=4.1%
     lat (msec): 250=65.7%, 500=10.3%, 750=0.9%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3177/2307, merge=434/402, ticks=73020/39040, in_queue=112052, util=99.18%
0.13user 0.27system 0:33.60elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2513minor)pagefaults 0swaps