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: [Fmm] [10.3% done] [ 10240/130020 kb/s] [eta 00m:26s]
fio: pid=26375, got signal=6
Threads: 2: [_mF] [15.4% done] [  9740/ 54920 kb/s] [eta 00m:22s]
Threads: 2: [_mF] [62.5% done] [   820/ 64044 kb/s] [eta 00m:03s]
Threads: 2: [_FF] [100.0% done] [     0/ 14408 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [68.4% done] [  1652/     0 kb/s] [eta 00m:06s]
Threads: 2: [_FV] [73.7% done] [  6469/     0 kb/s] [eta 00m:05s]
Threads: 2: [_FV] [78.9% done] [  6127/     0 kb/s] [eta 00m:04s]
Threads: 2: [_FV] [80.0% done] [  4417/     0 kb/s] [eta 00m:04s]
Threads: 2: [_VV] [68.0% done] [ 13328/     0 kb/s] [eta 00m:08s]
Threads: 2: [_VV] [75.0% done] [ 28029/     0 kb/s] [eta 00m:06s]
Threads: 2: [_VV] [82.6% done] [ 33277/     0 kb/s] [eta 00m:04s]
Threads: 2: [_VV] [90.9% done] [ 25417/     0 kb/s] [eta 00m:02s]
Threads: 1: [_V_] [100.0% done] [ 30041/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=26375
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=93.6%, 4=2.7%, 8=3.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=94.8%, 4=1.0%, 10=0.0%, 20=0.1%, 50=0.2%, 100=0.3%
     lat (msec): 250=1.2%, 500=1.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26376
  read : io=100MiB, bw=4,724KiB/s, runt= 22193msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  652, avg=46.02, stdev=76.43
    bw (KiB/s) : min=    5, max=34417, per=106.50%, avg=10386.47, stdev=8719.24
  write: io=78,452KiB, bw=4,654KiB/s, runt= 17260msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  515, avg= 1.64, stdev=23.64
    bw (KiB/s) : min=    0, max=127827, per=409.02%, avg=63913.50, stdev=90387.34
  cpu          : usr=2.81%, sys=1.82%, ctx=7448
  IO depths    : 1=0.7%, 2=49.6%, 4=29.8%, 8=19.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.4%, 4=1.4%, 10=9.8%, 20=24.4%, 50=5.7%, 100=2.2%
     lat (msec): 250=6.8%, 500=2.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26377
  read : io=100MiB, bw=5,010KiB/s, runt= 20925msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  440, avg=55.23, stdev=77.61
    bw (KiB/s) : min=   19, max=28455, per=84.29%, avg=8220.91, stdev=7599.38
  write: io=89,204KiB, bw=7,244KiB/s, runt= 12608msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  203, avg= 1.07, stdev=10.42
    bw (KiB/s) : min=    0, max=24504, per=78.41%, avg=12252.00, stdev=17326.94
  cpu          : usr=3.38%, sys=2.20%, ctx=7143
  IO depths    : 1=0.6%, 2=50.2%, 4=31.3%, 8=17.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.8%, 4=2.4%, 10=11.2%, 20=18.6%, 50=4.7%, 100=3.8%
     lat (msec): 250=10.6%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=206MiB, aggrb=9,753KiB/s, minb=0KiB/s, maxb=5,010KiB/s, mint=20925msec, maxt=22193msec
  WRITE: io=257MiB, aggrb=15,626KiB/s, minb=0KiB/s, maxb=7,244KiB/s, mint=20925msec, maxt=22193msec

Disk stats (read/write):
  sda: ios=2701/2033, merge=1141/63622, ticks=61160/1669564, in_queue=1814472, util=99.00%
2.14user 1.13system 0:22.49elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2480minor)pagefaults 0swaps