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] [8.3% done] [ 11828/  2068 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [10.3% done] [  5048/  6900 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [12.5% done] [  7939/  5850 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [15.8% done] [  8108/  4434 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [17.9% done] [  8853/  2820 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [21.1% done] [  7356/  3252 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.1% done] [  4924/  5500 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.6% done] [  7888/  2700 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [28.2% done] [  9884/  1040 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  8276/   732 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.7% done] [  4976/  3716 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [34.1% done] [  5576/  4484 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  3700/  6800 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  4992/  3592 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.5% done] [  6704/  2356 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  3996/  4244 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  4028/  5304 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  6464/  1048 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3788/  4560 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  3919/  3771 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  5612/  1360 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.3% done] [  5896/  1716 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  3964/  2376 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  3396/  2724 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  4104/  2016 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  3472/  3916 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [58.0% done] [  4056/  3636 kb/s] [eta 00m:21s]
fio: pid=5169, got signal=6
Threads: 2: [m_m] [58.8% done] [  3824/  2368 kb/s] [eta 00m:21s]
Threads: 2: [m_m] [59.6% done] [  2878/  3355 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5168, got signal=6
Threads: 1: [__m] [62.7% done] [  3612/  4168 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5170, got signal=6

fio: (groupid=0): err= 0: pid=5168
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.5%, 4=16.4%, 8=81.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.3%, 20=2.9%, 50=16.8%, 100=8.6%
     lat (msec): 250=63.0%, 500=7.0%, 750=0.3%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5169
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.7%, 4=16.0%, 8=81.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=1.6%, 20=2.5%, 50=16.1%, 100=5.4%
     lat (msec): 250=66.7%, 500=6.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5170
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.1%, 4=17.9%, 8=80.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.8%, 20=4.4%, 50=17.7%, 100=3.9%
     lat (msec): 250=62.3%, 500=8.7%, 750=1.6%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3259/2280, merge=671/351, ticks=77336/39068, in_queue=116404, util=99.13%
0.11user 0.28system 0:34.07elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps