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=25226, got signal=6
Threads: 2: [_mF] [75.0% done] [  5944/ 93912 kb/s] [eta 00m:01s]
Threads: 2: [_mF] [66.7% done] [   400/     0 kb/s] [eta 00m:02s]
Threads: 2: [_FF] [100.0% done] [   228/  2664 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] [68.8% done] [  1328/     0 kb/s] [eta 00m:05s]
Threads: 2: [_FV] [75.0% done] [  6072/     0 kb/s] [eta 00m:04s]
Threads: 2: [_FV] [81.2% done] [  9944/     0 kb/s] [eta 00m:03s]
Threads: 2: [_FV] [87.5% done] [ 14500/     0 kb/s] [eta 00m:02s]
Threads: 2: [_FV] [100.0% done] [ 15564/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [100.0% done] [ 13816/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [100.0% done] [ 18504/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [100.0% done] [  6680/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [79.2% done] [ 23132/     0 kb/s] [eta 00m:05s]
Threads: 1: [_V_] [100.0% done] [ 34120/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [100.0% done] [ 31000/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=25226
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=92.2%, 4=3.7%, 8=3.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=93.2%, 4=0.9%, 10=0.5%, 20=0.0%, 50=0.1%, 100=0.1%
     lat (msec): 250=4.2%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25227
  read : io=100MiB, bw=4,822KiB/s, runt= 21742msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  655, avg=28.60, stdev=62.83
    bw (KiB/s) : min=   10, max=36562, per=136.27%, avg=13317.21, stdev=14591.07
  write: io=88,184KiB, bw=4,799KiB/s, runt= 18816msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  311, avg= 1.87, stdev=15.95
    bw (KiB/s) : min=    0, max=28068, per=116.88%, avg=17796.67, stdev=15473.40
  cpu          : usr=3.51%, sys=1.89%, ctx=4927
  IO depths    : 1=2.8%, 2=54.6%, 4=29.4%, 8=13.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.8%, 4=0.9%, 10=22.4%, 20=15.8%, 50=6.7%, 100=1.7%
     lat (msec): 250=3.8%, 500=0.3%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25228
  read : io=100MiB, bw=5,575KiB/s, runt= 18806msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  551, avg=48.04, stdev=67.80
    bw (KiB/s) : min=    4, max=22152, per=94.26%, avg=9211.81, stdev=7022.72
  write: io=91,936KiB, bw=8,864KiB/s, runt= 10620msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  138, avg= 0.86, stdev= 7.29
    bw (KiB/s) : min=    0, max=23138, per=75.98%, avg=11569.00, stdev=16361.04
  cpu          : usr=4.11%, sys=2.36%, ctx=4657
  IO depths    : 1=1.6%, 2=52.8%, 4=31.0%, 8=14.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.8%, 4=0.5%, 10=13.4%, 20=13.9%, 50=9.7%, 100=6.3%
     lat (msec): 250=7.1%, 500=1.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=203MiB, aggrb=9,773KiB/s, minb=0KiB/s, maxb=5,575KiB/s, mint=18806msec, maxt=21742msec
  WRITE: io=273MiB, aggrb=15,226KiB/s, minb=0KiB/s, maxb=8,864KiB/s, mint=18806msec, maxt=21742msec

Disk stats (read/write):
  sda: ios=2561/2112, merge=861/67637, ticks=48328/2217056, in_queue=2334392, util=97.66%
2.42user 1.12system 0:22.12elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2483minor)pagefaults 0swaps