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=4469, got signal=6
Threads: 2: [mF_] [21.4% done] [   925/ 32192 kb/s] [eta 00m:11s]
Threads: 2: [FF_] [100.0% done] [   421/ 70147 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: [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: [VV_] [69.6% done] [ 27029/     0 kb/s] [eta 00m:07s]
Threads: 2: [VV_] [77.3% done] [ 29916/     0 kb/s] [eta 00m:05s]
Threads: 2: [VV_] [85.7% done] [ 34327/     0 kb/s] [eta 00m:03s]
Threads: 2: [VV_] [100.0% done] [ 29451/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [100.0% done] [ 39104/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=4467
  read : io=100MiB, bw=4,802KiB/s, runt= 21835msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1039, avg=39.67, stdev=91.64
    bw (KiB/s) : min=    4, max=34255, per=102.30%, avg=10224.61, stdev=9865.41
  write: io=94,944KiB, bw=6,205KiB/s, runt= 15668msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  939, avg= 2.81, stdev=37.78
    bw (KiB/s) : min=    0, max=137699, per=261.58%, avg=49417.33, stdev=76636.03
  cpu          : usr=4.09%, sys=2.03%, ctx=4879
  IO depths    : 1=3.3%, 2=58.7%, 4=28.1%, 8=9.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.8%, 4=2.7%, 10=17.6%, 20=18.0%, 50=5.2%, 100=1.8%
     lat (msec): 250=5.2%, 500=1.1%, 750=0.3%, 1000=0.2%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=4468
  read : io=100MiB, bw=4,988KiB/s, runt= 21021msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  434, avg=26.91, stdev=48.97
    bw (KiB/s) : min=   10, max=32402, per=163.34%, avg=16326.18, stdev=9568.71
  write: io=98MiB, bw=6,549KiB/s, runt= 15644msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  246, avg= 0.78, stdev= 9.20
    bw (KiB/s) : min=    0, max=125722, per=332.74%, avg=62861.00, stdev=88898.88
  cpu          : usr=4.41%, sys=2.21%, ctx=4799
  IO depths    : 1=3.2%, 2=59.7%, 4=28.7%, 8=8.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.4%, 4=1.7%, 10=17.5%, 20=16.8%, 50=8.3%, 100=1.8%
     lat (msec): 250=3.8%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4469
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=93.2%, 4=3.0%, 8=3.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=94.7%, 4=0.5%, 10=0.0%, 20=0.6%, 50=0.3%, 100=0.8%
     lat (msec): 250=1.2%, 500=1.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=208MiB, aggrb=9,995KiB/s, minb=0KiB/s, maxb=4,988KiB/s, mint=0msec, maxt=21835msec
  WRITE: io=282MiB, aggrb=18,892KiB/s, minb=0KiB/s, maxb=6,549KiB/s, mint=0msec, maxt=21835msec

Disk stats (read/write):
  sda: ios=2122/2283, merge=807/69718, ticks=43948/1969164, in_queue=2014044, util=97.43%
2.61user 1.17system 0:22.22elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2479minor)pagefaults 0swaps