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] [ 13108/  3740 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [ 10900/  6296 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.2% done] [ 12136/  3636 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [15.4% done] [ 10908/  1188 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [19.4% done] [ 10572/  3420 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [ 13359/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [ 10112/  1336 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  8339/  4195 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  6184/  7724 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [ 10584/  1320 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [ 10840/  1600 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  4632/  7040 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.5% done] [  5468/  4100 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.2% done] [  9388/  1420 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  5156/  5028 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.4% done] [  4400/  5593 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  6552/  2088 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  4972/  1928 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  5184/  3064 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.7% done] [  5880/  2564 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [56.1% done] [  5236/  2704 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31932, got signal=6
Threads: 2: [m_m] [57.1% done] [  1804/  6008 kb/s] [eta 00m:18s]
Threads: 2: [m_m] [61.0% done] [  2564/  3904 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31933, got signal=6
Threads: 1: [m__] [65.0% done] [  2734/  5685 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31931, got signal=6

fio: (groupid=0): err= 0: pid=31931
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=6.0%, 4=35.1%, 8=57.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.8%, 4=0.0%, 10=2.2%, 20=5.1%, 50=20.5%, 100=15.9%
     lat (msec): 250=40.0%, 500=13.3%, 750=0.7%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31932
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.2%, 4=29.4%, 8=67.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.7%, 20=2.9%, 50=11.3%, 100=22.3%
     lat (msec): 250=58.2%, 500=2.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31933
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.0%, 4=26.8%, 8=70.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.2%, 20=1.1%, 50=11.5%, 100=23.2%
     lat (msec): 250=58.4%, 500=4.6%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3340/2350, merge=703/103, ticks=70036/64952, in_queue=134980, util=99.08%
0.24user 0.30system 0:27.54elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps