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=16619, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16621, got signal=6
Threads: 1: [_m_] [75.0% done] [  4704/ 11428 kb/s] [eta 00m:01s]
Threads: 1: [_m_] [66.7% done] [   696/     0 kb/s] [eta 00m:02s]
Threads: 1: [_F_] [100.0% done] [   384/  3512 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: [_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_] [70.0% done] [  3096/     0 kb/s] [eta 00m:06s]
Threads: 1: [_V_] [100.0% done] [ 44539/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [100.0% done] [ 43060/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=16619
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=26.8%, 2=65.8%, 4=3.2%, 8=4.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=90.4%, 4=1.9%, 10=1.0%, 20=1.2%, 50=0.7%, 100=1.6%
     lat (msec): 250=2.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16620
  read : io=100MiB, bw=6,362KiB/s, runt= 16481msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  654, avg=27.11, stdev=72.06
    bw (KiB/s) : min=    7, max=45650, per=208.87%, avg=14900.62, stdev=19985.05
  write: io=91,700KiB, bw=6,583KiB/s, runt= 14264msec
    slat (msec): min=    0, max=   11, avg= 0.01, stdev= 0.28
    clat (msec): min=    0, max=  101, avg= 0.54, stdev= 5.06
    bw (KiB/s) : min=    0, max=77365, per=153.14%, avg=31224.67, stdev=40782.27
  cpu          : usr=5.15%, sys=2.50%, ctx=6152
  IO depths    : 1=7.4%, 2=47.7%, 4=30.5%, 8=14.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=1.9%, 10=22.2%, 20=20.0%, 50=2.4%, 100=0.8%
     lat (msec): 250=2.8%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16621
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=83.6%, 4=7.7%, 8=8.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=83.0%, 4=0.4%, 10=2.3%, 20=1.5%, 50=6.1%, 100=2.7%
     lat (msec): 250=3.6%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=112MiB, aggrb=7,134KiB/s, minb=0KiB/s, maxb=6,362KiB/s, mint=0msec, maxt=16481msec
  WRITE: io=277MiB, aggrb=20,389KiB/s, minb=0KiB/s, maxb=6,583KiB/s, mint=0msec, maxt=16481msec

Disk stats (read/write):
  sda: ios=1350/2504, merge=598/68221, ticks=12260/1682140, in_queue=1706236, util=95.84%
2.56user 0.95system 0:16.87elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps