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] [5.0% done] [  5268/ 10412 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [6.7% done] [ 14732/     0 kb/s] [eta 00m:56s]
Threads: 3: [mmm] [8.3% done] [ 12516/     0 kb/s] [eta 00m:55s]
Threads: 3: [mmm] [10.0% done] [  9580/  3504 kb/s] [eta 00m:54s]
Threads: 3: [mmm] [11.7% done] [  3496/  5328 kb/s] [eta 00m:53s]
Threads: 3: [mmm] [13.3% done] [  8300/  2400 kb/s] [eta 00m:52s]
Threads: 3: [mmm] [15.0% done] [  8140/  6836 kb/s] [eta 00m:51s]
Threads: 3: [mmm] [16.7% done] [  7792/  7616 kb/s] [eta 00m:50s]
Threads: 3: [mmm] [18.3% done] [  9604/  3364 kb/s] [eta 00m:49s]
Threads: 3: [mmm] [20.0% done] [ 11072/  3276 kb/s] [eta 00m:48s]
Threads: 3: [mmm] [21.7% done] [ 10172/  1404 kb/s] [eta 00m:47s]
Threads: 3: [mmm] [23.7% done] [  7212/  5240 kb/s] [eta 00m:45s]
Threads: 3: [mmm] [27.3% done] [  9676/  2000 kb/s] [eta 00m:40s]
Threads: 3: [mmm] [30.2% done] [  5324/  4444 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [34.7% done] [  3552/  7808 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [37.5% done] [  3704/  6460 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [40.4% done] [  5516/  4592 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [43.5% done] [  6260/  3892 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [45.7% done] [  6248/  2412 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [47.8% done] [  5224/  2484 kb/s] [eta 00m:24s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26892, got signal=6
Threads: 2: [mm_] [51.1% done] [  4128/  4352 kb/s] [eta 00m:22s]
Threads: 2: [mm_] [53.3% done] [  2064/  6992 kb/s] [eta 00m:21s]
Threads: 2: [mm_] [56.8% done] [  1208/  7184 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26890, got signal=6
Threads: 1: [_m_] [59.1% done] [  3752/  3404 kb/s] [eta 00m:18s]
Threads: 1: [_m_] [64.3% done] [  6100/  2324 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26891, got signal=6

fio: (groupid=0): err= 0: pid=26890
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=28.3%, 8=69.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.3%, 10=1.5%, 20=2.5%, 50=17.4%, 100=25.0%
     lat (msec): 250=40.4%, 500=11.1%, 750=0.6%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26891
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.1%, 4=37.3%, 8=59.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.1%, 10=2.4%, 20=5.9%, 50=30.2%, 100=16.5%
     lat (msec): 250=40.4%, 500=2.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26892
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.6%, 4=32.6%, 8=64.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.4%, 20=3.2%, 50=11.3%, 100=30.3%
     lat (msec): 250=50.6%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3201/2802, merge=304/1844, ticks=54100/1155584, in_queue=983384, util=99.54%
0.22user 0.43system 0:28.65elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2515minor)pagefaults 0swaps