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] [8.6% done] [  4236/ 13596 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.8% done] [  9556/  4844 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [13.9% done] [  6430/  7751 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.1% done] [  3152/ 12292 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [  7220/  6076 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [21.6% done] [  6692/  4384 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  5360/  9244 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  8392/  5577 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [ 11484/  2216 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.3% done] [  3892/ 10156 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [38.2% done] [   464/ 12176 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [40.0% done] [  4892/  7200 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [41.7% done] [  5296/  5376 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.4% done] [  6948/  2972 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [47.2% done] [  6784/  3416 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [48.6% done] [  5100/  3783 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.8% done] [  3140/  5776 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [55.6% done] [  6152/  1872 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [58.3% done] [  3576/  5752 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [59.5% done] [  5212/  3280 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [60.5% done] [  1872/  7420 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [60.0% done] [  3684/  3696 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14192, got signal=6
Threads: 2: [m_m] [61.0% done] [  4512/     0 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14193, got signal=6
Threads: 1: [m__] [66.7% done] [  3740/  4476 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14191, got signal=6

fio: (groupid=0): err= 0: pid=14191
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.2%, 4=32.4%, 8=65.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=1.8%, 20=5.1%, 50=25.1%, 100=15.8%
     lat (msec): 250=38.3%, 500=11.3%, 750=1.7%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14192
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.7%, 4=35.7%, 8=61.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.1%, 20=4.7%, 50=15.5%, 100=25.8%
     lat (msec): 250=45.0%, 500=6.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14193
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.4%, 4=26.9%, 8=71.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=1.0%, 20=2.4%, 50=10.4%, 100=28.4%
     lat (msec): 250=53.0%, 500=4.1%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2872/2911, merge=407/365, ticks=54412/150020, in_queue=204432, util=99.25%
0.27user 0.30system 0:27.21elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2497minor)pagefaults 0swaps