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] [ 16116/     0 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [10.5% done] [ 11812/  5320 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [13.5% done] [ 11036/  3816 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [15.8% done] [  6172/  8064 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [18.4% done] [ 11880/  2564 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.6% done] [  8612/  4784 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.0% done] [  9544/  4296 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.6% done] [  8688/  4188 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [29.7% done] [  9936/  2388 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.8% done] [  8748/  2692 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [ 11596/   780 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [ 10012/  1196 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  5976/  5664 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.0% done] [  7260/  1908 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  5440/  4228 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  5440/  2724 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  6516/  1936 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  7164/  1884 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3912/  4232 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24271, got signal=6
Threads: 2: [m_m] [48.9% done] [  3700/  2732 kb/s] [eta 00m:23s]
Threads: 2: [m_m] [50.0% done] [  3068/  5736 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24272, got signal=6
Threads: 1: [m__] [54.5% done] [  8324/     0 kb/s] [eta 00m:20s]
Threads: 1: [m__] [61.0% done] [  4084/  6216 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  4840/  3620 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24270, got signal=6

fio: (groupid=0): err= 0: pid=24270
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.2%, 4=28.3%, 8=68.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=1.8%, 20=5.9%, 50=32.5%, 100=14.1%
     lat (msec): 250=25.0%, 500=18.0%, 750=1.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24271
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.1%, 4=24.6%, 8=74.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.5%, 20=3.0%, 50=15.0%, 100=27.8%
     lat (msec): 250=51.6%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24272
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.6%, 4=22.1%, 8=76.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.9%, 20=3.2%, 50=12.8%, 100=28.0%
     lat (msec): 250=49.6%, 500=4.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3596/1981, merge=698/174, ticks=61132/39740, in_queue=100872, util=99.05%
0.19user 0.30system 0:27.14elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2482minor)pagefaults 0swaps