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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25630, got signal=6
Threads: 2
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25629, got signal=6
Threads: 1: [__F] [100.0% done] [   384/ 93464 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] [72.7% done] [  2000/     0 kb/s] [eta 00m:03s]
Threads: 1: [__V] [75.0% done] [  8544/     0 kb/s] [eta 00m:03s]
Threads: 1: [__V] [83.3% done] [ 10868/     0 kb/s] [eta 00m:02s]
Threads: 1: [__V] [91.7% done] [  9804/     0 kb/s] [eta 00m:01s]
Threads: 1: [__V] [100.0% done] [ 14205/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 16784/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [  8088/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [  8996/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [  6084/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=25629
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=93.1%, 4=2.9%, 8=3.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=94.6%, 4=0.6%, 10=0.1%, 20=0.1%, 50=0.3%, 100=0.2%
     lat (msec): 250=3.0%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25630
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=96.5%, 4=1.8%, 8=1.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=96.9%, 4=0.6%, 10=0.0%, 20=0.1%, 50=0.3%, 100=0.4%
     lat (msec): 250=1.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25631
  read : io=100MiB, bw=6,094KiB/s, runt= 17205msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  639, avg=54.47, stdev=68.04
    bw (KiB/s) : min=    3, max=20668, per=125.40%, avg=8371.39, stdev=5130.81
  write: io=94,408KiB, bw=13,127KiB/s, runt=  7364msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  479, avg= 1.75, stdev=22.83
    bw (KiB/s) : min=    0, max=22379, per=27.81%, avg=11189.50, stdev=15824.34
  cpu          : usr=4.12%, sys=2.91%, ctx=4332
  IO depths    : 1=1.1%, 2=53.3%, 4=30.9%, 8=14.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.3%, 4=0.1%, 10=9.7%, 20=8.4%, 50=14.3%, 100=8.8%
     lat (msec): 250=7.8%, 500=1.3%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=110MiB, aggrb=6,676KiB/s, minb=0KiB/s, maxb=6,094KiB/s, mint=17205msec, maxt=17205msec
  WRITE: io=283MiB, aggrb=40,230KiB/s, minb=0KiB/s, maxb=13,127KiB/s, mint=17205msec, maxt=17205msec

Disk stats (read/write):
  sda: ios=1389/2100, merge=569/62002, ticks=38120/1646872, in_queue=2328160, util=99.18%
2.21user 0.96system 0:17.94elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps