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] [10.3% done] [  9625/  7750 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [13.8% done] [  9125/  7140 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [15.6% done] [  9854/  4726 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [19.4% done] [  9932/  3930 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [21.2% done] [  9416/  3792 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [22.9% done] [  7546/  7534 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [26.5% done] [ 11807/  2567 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [28.6% done] [  8593/  3824 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [30.6% done] [  9137/  2938 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  8688/  4166 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  9755/  1260 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  6084/  5702 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.7% done] [  7813/  3414 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  7313/  3776 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.9% done] [  5998/  3201 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [47.4% done] [  5588/  4048 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  5376/  2882 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  4269/  3587 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  3560/  5246 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21176, got signal=6
Threads: 2: [m_m] [53.5% done] [  3710/  3753 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [55.8% done] [  6868/   370 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [59.5% done] [   126/  7427 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21177, got signal=6
Threads: 1: [m__] [61.9% done] [  4233/  1721 kb/s] [eta 00m:16s]
Threads: 1: [m__] [67.5% done] [  3891/  3918 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21175, got signal=6

fio: (groupid=0): err= 0: pid=21175
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.5%, 4=38.0%, 8=58.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=0.2%, 20=7.6%, 50=22.9%, 100=17.5%
     lat (msec): 250=35.6%, 500=14.4%, 750=0.3%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21176
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.9%, 4=31.2%, 8=64.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=0.7%, 20=3.9%, 50=14.2%, 100=23.1%
     lat (msec): 250=54.0%, 500=3.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21177
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.1%, 4=30.9%, 8=65.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=0.5%, 20=4.6%, 50=9.8%, 100=26.3%
     lat (msec): 250=51.6%, 500=6.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3443/2256, merge=428/205, ticks=65376/53912, in_queue=119288, util=98.87%
0.24user 0.44system 0:27.62elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps