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] [8.8% done] [ 10656/  5884 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [12.5% done] [  8464/  7468 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [16.1% done] [  9864/  6668 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [18.2% done] [  7684/  7316 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [20.6% done] [  9820/  3892 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.2% done] [  7049/  4671 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [24.3% done] [ 12087/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.8% done] [ 10812/  2992 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  7967/  5811 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  8928/  4160 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  4592/  7944 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.9% done] [  6800/  4184 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [41.7% done] [  8592/  1784 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  7076/  2908 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  2352/  8260 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.4% done] [  5812/  4040 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [47.5% done] [  5688/  1588 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  8196/     0 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  6984/     0 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.7% done] [  5540/  2384 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [54.8% done] [  5440/  2328 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3119, got signal=6
Threads: 2: [m_m] [54.5% done] [  2640/  4536 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [56.8% done] [  6136/   152 kb/s] [eta 00m:19s]
fio: pid=3120, got signal=6
Threads: 1: [m__] [63.4% done] [  8828/     0 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3118, got signal=6

fio: (groupid=0): err= 0: pid=3118
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=0.7%, 4=31.5%, 8=67.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.6%, 20=2.7%, 50=29.5%, 100=12.3%
     lat (msec): 250=40.1%, 500=13.3%, 750=0.9%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3119
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.3%, 4=31.8%, 8=64.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=1.0%, 20=2.9%, 50=14.0%, 100=25.8%
     lat (msec): 250=51.8%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3120
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.9%, 4=26.8%, 8=71.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.8%, 20=2.5%, 50=10.4%, 100=21.8%
     lat (msec): 250=60.1%, 500=3.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=4030/1683, merge=410/399, ticks=71292/85580, in_queue=156872, util=99.15%
0.21user 0.37system 0:27.87elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2488minor)pagefaults 0swaps