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.
Threads: 3: [mFF] [37.5% done] [  2136/     0 kb/s] [eta 00m:05s]
fio: pid=13910, got signal=6
Threads: 2: [m_F] [36.4% done] [  1096/     0 kb/s] [eta 00m:07s]
Threads: 2: [m_F] [38.5% done] [   512/     0 kb/s] [eta 00m:08s]
Threads: 2: [F_F] [100.0% done] [   244/ 46040 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: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [69.6% done] [   648/     0 kb/s] [eta 00m:07s]
Threads: 2: [V_V] [73.9% done] [ 23808/     0 kb/s] [eta 00m:06s]
Threads: 2: [V_V] [81.8% done] [ 24924/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [90.5% done] [ 34336/     0 kb/s] [eta 00m:02s]
Threads: 2: [V_V] [100.0% done] [ 40088/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 34860/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=13909
  read : io=100MiB, bw=4,644KiB/s, runt= 22578msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1071, avg=47.37, stdev=111.78
    bw (KiB/s) : min=    0, max=25266, per=89.91%, avg=8514.05, stdev=8636.74
  write: io=94,776KiB, bw=5,952KiB/s, runt= 16304msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  327, avg= 1.38, stdev=14.36
    bw (KiB/s) : min=    0, max= 9413, per=26.21%, avg=4706.50, stdev=6656.00
  cpu          : usr=3.47%, sys=1.75%, ctx=5194
  IO depths    : 1=1.9%, 2=54.3%, 4=31.2%, 8=12.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.7%, 4=0.8%, 10=23.1%, 20=13.3%, 50=4.7%, 100=1.8%
     lat (msec): 250=6.5%, 500=1.2%, 750=0.4%, 1000=0.2%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=13910
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=3.0%, 2=82.3%, 4=8.8%, 8=5.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=81.2%, 4=3.3%, 10=2.2%, 20=3.3%, 50=5.6%, 100=2.7%
     lat (msec): 250=1.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13911
  read : io=100MiB, bw=4,670KiB/s, runt= 22450msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  382, avg=31.21, stdev=50.43
    bw (KiB/s) : min=   13, max=23790, per=142.00%, avg=13447.86, stdev=7040.46
  write: io=92,804KiB, bw=5,834KiB/s, runt= 16288msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  134, avg= 0.44, stdev= 5.29
    bw (KiB/s) : min=    0, max=137773, per=383.68%, avg=68886.50, stdev=97420.22
  cpu          : usr=3.33%, sys=1.34%, ctx=5365
  IO depths    : 1=1.4%, 2=56.1%, 4=30.7%, 8=11.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.6%, 4=0.1%, 10=21.9%, 20=14.4%, 50=4.7%, 100=3.0%
     lat (msec): 250=5.6%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=204MiB, aggrb=9,470KiB/s, minb=0KiB/s, maxb=4,670KiB/s, mint=22450msec, maxt=22578msec
  WRITE: io=279MiB, aggrb=17,954KiB/s, minb=0KiB/s, maxb=5,952KiB/s, mint=22450msec, maxt=22578msec

Disk stats (read/write):
  sda: ios=2420/2743, merge=808/68559, ticks=36944/2099248, in_queue=2138672, util=98.76%
2.51user 0.91system 0:23.08elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2475minor)pagefaults 0swaps