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=3643, got signal=6
Threads: 2: [m_F] [75.0% done] [   594/ 86429 kb/s] [eta 00m:01s]
Threads: 2: [F_F] [100.0% done] [   220/  9810 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_V] [68.8% done] [  2622/     0 kb/s] [eta 00m:05s]
Threads: 2: [F_V] [80.0% done] [ 10896/     0 kb/s] [eta 00m:03s]
Threads: 2: [F_V] [81.2% done] [  7272/     0 kb/s] [eta 00m:03s]
Threads: 2: [F_V] [87.5% done] [  9501/     0 kb/s] [eta 00m:02s]
Threads: 2: [F_V] [93.8% done] [ 10468/     0 kb/s] [eta 00m:01s]
Threads: 2: [F_V] [100.0% done] [ 14436/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_V] [100.0% done] [ 15420/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [66.7% done] [ 10620/     0 kb/s] [eta 00m:09s]
Threads: 1: [V__] [82.6% done] [ 28080/     0 kb/s] [eta 00m:04s]
Threads: 1: [V__] [100.0% done] [ 39680/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=3642
  read : io=100MiB, bw=4,840KiB/s, runt= 21661msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  571, avg=24.16, stdev=65.68
    bw (KiB/s) : min=    2, max=40122, per=173.66%, avg=17329.50, stdev=17796.74
  write: io=97,228KiB, bw=5,363KiB/s, runt= 18564msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  251, avg= 1.34, stdev=12.63
    bw (KiB/s) : min=    0, max=121473, per=303.09%, avg=47203.67, stdev=65102.50
  cpu          : usr=3.71%, sys=1.87%, ctx=4658
  IO depths    : 1=1.9%, 2=55.6%, 4=31.6%, 8=10.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.7%, 4=0.9%, 10=26.2%, 20=14.9%, 50=5.8%, 100=0.8%
     lat (msec): 250=1.1%, 500=1.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3643
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=92.7%, 4=3.8%, 8=3.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=93.8%, 4=0.4%, 10=0.0%, 20=1.2%, 50=0.7%, 100=0.3%
     lat (msec): 250=2.4%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3644
  read : io=100MiB, bw=5,546KiB/s, runt= 18905msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  575, avg=49.87, stdev=59.38
    bw (KiB/s) : min=    3, max=21963, per=93.04%, avg=9284.19, stdev=5458.55
  write: io=89,036KiB, bw=8,763KiB/s, runt= 10404msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  105, avg= 0.55, stdev= 5.49
    bw (KiB/s) : min=    0, max=137297, per=440.79%, avg=68648.50, stdev=97083.64
  cpu          : usr=3.64%, sys=2.41%, ctx=4396
  IO depths    : 1=1.0%, 2=52.0%, 4=30.5%, 8=16.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.2%, 4=0.4%, 10=10.7%, 20=8.5%, 50=14.6%, 100=10.2%
     lat (msec): 250=6.2%, 500=0.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=206MiB, aggrb=9,979KiB/s, minb=0KiB/s, maxb=5,546KiB/s, mint=18905msec, maxt=21661msec
  WRITE: io=276MiB, aggrb=15,574KiB/s, minb=0KiB/s, maxb=8,763KiB/s, mint=18905msec, maxt=21661msec

Disk stats (read/write):
  sda: ios=2417/2065, merge=821/68346, ticks=41540/2053956, in_queue=2211064, util=98.16%
2.32user 1.16system 0:22.06elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2481minor)pagefaults 0swaps