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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32378, got signal=6
Threads: 2: [Fm_] [60.0% done] [  1096/ 45828 kb/s] [eta 00m:02s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [FF_] [100.0% done] [   960/ 14716 kb/s] [eta 00m:00s]
fio: pid=32377, got signal=6
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [76.9% done] [  7332/     0 kb/s] [eta 00m:03s]
Threads: 1: [V__] [84.6% done] [ 19860/     0 kb/s] [eta 00m:02s]
Threads: 1: [V__] [100.0% done] [ 13972/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [100.0% done] [ 11424/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [100.0% done] [ 27216/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [100.0% done] [ 22172/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=32376
  read : io=100MiB, bw=6,785KiB/s, runt= 15454msec
    clat (msec): min=    0, max=  178, avg=26.37, stdev=31.89
    bw (KiB/s) : min=    0, max=37242, per=194.39%, avg=15894.92, stdev=10480.22
  write: io=100MiB, bw=10,913KiB/s, runt=  9608msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   18, avg= 0.53, stdev= 1.90
    bw (KiB/s) : min=    0, max=96652, per=158.51%, avg=48326.00, stdev=68343.28
  cpu          : usr=5.82%, sys=2.61%, ctx=5533
  IO depths    : 1=1.3%, 2=55.4%, 4=31.7%, 8=11.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.8%, 4=1.2%, 10=19.1%, 20=14.0%, 50=7.7%, 100=6.8%
     lat (msec): 250=2.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32377
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=86.1%, 4=6.4%, 8=6.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=82.6%, 4=5.2%, 10=3.0%, 20=1.6%, 50=0.4%, 100=1.7%
     lat (msec): 250=3.0%, 500=1.9%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32378
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=88.1%, 4=4.1%, 8=7.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=87.0%, 4=2.6%, 10=1.0%, 20=0.8%, 50=0.7%, 100=4.9%
     lat (msec): 250=2.4%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=121MiB, aggrb=8,177KiB/s, minb=0KiB/s, maxb=6,785KiB/s, mint=0msec, maxt=15454msec
  WRITE: io=279MiB, aggrb=30,488KiB/s, minb=0KiB/s, maxb=10,913KiB/s, mint=0msec, maxt=15454msec

Disk stats (read/write):
  sda: ios=1142/2410, merge=387/67188, ticks=15908/1675492, in_queue=2030740, util=98.81%
2.62user 0.99system 0:15.79elapsed 22%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2477minor)pagefaults 0swaps