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] [ 10164/  5672 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [12.5% done] [ 15856/   700 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [15.2% done] [ 11692/  5528 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [17.1% done] [  7392/  5664 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.6% done] [ 10596/  3444 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [23.5% done] [  7124/  5236 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.0% done] [  7955/  4940 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  5720/  6608 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [ 10448/  2468 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  9297/  4348 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [35.1% done] [  8284/  3548 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  9932/  1888 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [39.5% done] [  6312/  3864 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.1% done] [  8780/  1628 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  4924/  5504 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.4% done] [  5228/  4456 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  6716/  1768 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  3240/  5724 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  4648/  3108 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.7% done] [  1940/  7360 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [56.1% done] [  4476/  2392 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16397, got signal=6
Threads: 2: [m_m] [57.1% done] [  4768/  1244 kb/s] [eta 00m:18s]
Threads: 2: [m_m] [62.5% done] [  1012/  8704 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16398, got signal=6
Threads: 1: [m__] [65.0% done] [  2456/  4240 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16396, got signal=6

fio: (groupid=0): err= 0: pid=16396
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=3.3%, 4=37.2%, 8=59.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.5%, 4=0.1%, 10=1.9%, 20=4.6%, 50=24.6%, 100=15.1%
     lat (msec): 250=37.0%, 500=13.8%, 750=1.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16397
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=31.7%, 8=65.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.2%, 10=0.5%, 20=2.3%, 50=15.9%, 100=23.7%
     lat (msec): 250=52.2%, 500=4.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16398
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.9%, 4=32.6%, 8=64.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=1.3%, 20=2.8%, 50=10.9%, 100=27.7%
     lat (msec): 250=50.5%, 500=6.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3136/2673, merge=450/197, ticks=55496/64956, in_queue=120452, util=99.21%
0.21user 0.42system 0:27.59elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps