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=15725, got signal=6
Threads: 2
Threads: 2: [F_m] [6.2% done] [  1350/     0 kb/s] [eta 00m:45s]
Threads: 2: [F_m] [7.5% done] [  1917/     0 kb/s] [eta 00m:49s]
Threads: 2: [F_m] [10.9% done] [  1869/  3299 kb/s] [eta 00m:41s]
Threads: 2: [F_m] [20.0% done] [  1657/ 12304 kb/s] [eta 00m:24s]
Threads: 2: [F_m] [36.8% done] [  1389/ 24742 kb/s] [eta 00m:12s]
Threads: 2: [F_F] [100.0% done] [     0/ 47199 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] [  1652/     0 kb/s] [eta 00m:07s]
Threads: 2: [V_V] [76.2% done] [ 26436/     0 kb/s] [eta 00m:05s]
Threads: 2: [V_V] [85.0% done] [ 29960/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [94.7% done] [ 34364/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [100.0% done] [ 37672/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 34920/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=15724
  read : io=100MiB, bw=5,017KiB/s, runt= 20898msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  398, avg=30.18, stdev=49.73
    bw (KiB/s) : min=    1, max=26169, per=135.75%, avg=13861.46, stdev=8839.39
  write: io=98MiB, bw=6,899KiB/s, runt= 14908msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   71, avg= 0.41, stdev= 3.26
    bw (KiB/s) : min=    0, max=56834, per=146.39%, avg=28417.00, stdev=40187.71
  cpu          : usr=3.90%, sys=1.95%, ctx=6027
  IO depths    : 1=1.9%, 2=58.2%, 4=29.5%, 8=10.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.5%, 4=0.3%, 10=23.1%, 20=12.4%, 50=5.6%, 100=1.2%
     lat (msec): 250=6.4%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15725
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=94.3%, 4=2.5%, 8=2.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=93.7%, 4=2.1%, 10=0.7%, 20=0.0%, 50=0.1%, 100=0.4%
     lat (msec): 250=2.1%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15726
  read : io=100MiB, bw=4,954KiB/s, runt= 21166msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1230, avg=60.01, stdev=128.26
    bw (KiB/s) : min=   29, max=19095, per=70.92%, avg=7241.96, stdev=6798.40
  write: io=86,132KiB, bw=5,917KiB/s, runt= 14904msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  410, avg= 3.29, stdev=29.95
    bw (KiB/s) : min=    0, max=13970, per=47.74%, avg=9268.00, stdev=8026.61
  cpu          : usr=2.95%, sys=1.98%, ctx=6124
  IO depths    : 1=1.3%, 2=53.3%, 4=30.4%, 8=15.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.8%, 4=0.0%, 10=18.3%, 20=16.0%, 50=5.9%, 100=1.3%
     lat (msec): 250=7.0%, 500=2.3%, 750=1.0%, 1000=0.2%, >=2000=0.1%

Run status group 0 (all jobs):
   READ: io=206MiB, aggrb=10,211KiB/s, minb=0KiB/s, maxb=5,017KiB/s, mint=21166msec, maxt=21166msec
  WRITE: io=276MiB, aggrb=19,412KiB/s, minb=0KiB/s, maxb=6,899KiB/s, mint=21166msec, maxt=21166msec

Disk stats (read/write):
  sda: ios=2329/2358, merge=758/68110, ticks=38648/1881652, in_queue=1925584, util=98.86%
2.27user 1.08system 0:21.43elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2469minor)pagefaults 0swaps