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=1346, got signal=6
Threads: 2: [m_m] [37.5% done] [  8120/ 35640 kb/s] [eta 00m:05s]
Threads: 2: [F_m] [36.4% done] [  1732/  6372 kb/s] [eta 00m:07s]
Threads: 2: [F_m] [62.5% done] [  1012/ 37784 kb/s] [eta 00m:03s]
Threads: 2: [F_F] [100.0% done] [   192/  8772 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [68.2% done] [  1020/     0 kb/s] [eta 00m:07s]
Threads: 2: [V_V] [76.2% done] [ 23496/     0 kb/s] [eta 00m:05s]
Threads: 2: [V_V] [85.0% done] [ 29500/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [94.7% done] [ 33788/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [100.0% done] [ 33976/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 32192/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=1345
  read : io=100MiB, bw=4,878KiB/s, runt= 21477msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  405, avg=41.79, stdev=64.37
    bw (KiB/s) : min=    7, max=24690, per=102.76%, avg=10406.29, stdev=8114.27
  write: io=94,932KiB, bw=6,415KiB/s, runt= 15152msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  310, avg= 1.16, stdev=13.77
    bw (KiB/s) : min=    0, max=135749, per=274.11%, avg=51055.33, stdev=73862.04
  cpu          : usr=3.41%, sys=2.05%, ctx=5201
  IO depths    : 1=1.2%, 2=52.9%, 4=32.2%, 8=13.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.8%, 4=0.2%, 10=16.7%, 20=16.6%, 50=6.4%, 100=1.8%
     lat (msec): 250=8.4%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1346
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=92.0%, 4=1.8%, 8=6.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=91.1%, 4=1.0%, 10=0.2%, 20=0.3%, 50=0.2%, 100=1.9%
     lat (msec): 250=4.1%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1347
  read : io=100MiB, bw=4,935KiB/s, runt= 21226msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  518, avg=50.04, stdev=77.66
    bw (KiB/s) : min=   10, max=22617, per=85.91%, avg=8700.23, stdev=7373.82
  write: io=86,156KiB, bw=5,825KiB/s, runt= 15144msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  255, avg= 2.07, stdev=17.80
    bw (KiB/s) : min=    0, max=35201, per=90.91%, avg=16932.67, stdev=17638.47
  cpu          : usr=3.37%, sys=2.05%, ctx=5405
  IO depths    : 1=0.9%, 2=51.0%, 4=31.2%, 8=16.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.2%, 4=0.6%, 10=15.1%, 20=17.7%, 50=6.5%, 100=2.5%
     lat (msec): 250=9.5%, 500=1.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=207MiB, aggrb=10,127KiB/s, minb=0KiB/s, maxb=4,935KiB/s, mint=21226msec, maxt=21477msec
  WRITE: io=269MiB, aggrb=18,626KiB/s, minb=0KiB/s, maxb=6,415KiB/s, mint=21226msec, maxt=21477msec

Disk stats (read/write):
  sda: ios=2626/2136, merge=908/66586, ticks=39500/1856088, in_queue=1896928, util=98.93%
2.25user 1.13system 0:21.76elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2468minor)pagefaults 0swaps