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
Threads: 3: [mmm] [8.1% done] [  7117/  5186 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [  8000/  4340 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [  9312/  4008 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.1% done] [  9824/  3448 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [19.4% done] [  9880/  3024 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [  6136/  4544 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  5264/  7460 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [26.3% done] [  5236/  5064 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  6088/  4532 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [  8064/  1984 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  5964/  4228 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  5168/  3696 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  5672/  4568 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  7360/  2816 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  5164/  3916 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  6866/  1641 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  3612/  4852 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  4448/  3152 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [   824/  7968 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  4744/  2964 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  3996/  2172 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.3% done] [  4860/  1852 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  6560/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  7232/   640 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.1% done] [  6176/  1108 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [56.0% done] [  4120/  3364 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12382, got signal=6
Threads: 2: [m_m] [56.9% done] [  3856/  2860 kb/s] [eta 00m:22s]
Threads: 2: [m_m] [56.6% done] [  3748/  3268 kb/s] [eta 00m:23s]
Threads: 2: [V_m] [57.4% done] [ 13752/     0 kb/s] [eta 00m:23s]
Threads: 2: [V_m] [57.1% done] [ 15120/     0 kb/s] [eta 00m:24s]
Threads: 1: [__m] [58.6% done] [ 12684/  2170 kb/s] [eta 00m:24s]
Threads: 1: [__m] [64.8% done] [     0/  8988 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12383, got signal=6

fio: (groupid=0): err= 0: pid=12381
  read : io=100MiB, bw=3,107KiB/s, runt= 33598msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  615, avg=105.04, stdev=95.40
    bw (KiB/s) : min=   41, max=17261, per=50.88%, avg=3588.74, stdev=4037.32
  write: io=41,396KiB, bw=1,378KiB/s, runt= 30757msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  343, avg=127.96, stdev=72.23
    bw (KiB/s) : min=    0, max= 5647, per=56.51%, avg=2192.04, stdev=1777.25
  cpu          : usr=0.05%, sys=0.35%, ctx=6602
  IO depths    : 1=0.5%, 2=2.7%, 4=28.7%, 8=68.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=3.0%, 20=7.6%, 50=31.3%, 100=7.5%
     lat (msec): 250=46.1%, 500=3.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12382
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.0%, 4=17.0%, 8=81.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=1.0%, 20=1.3%, 50=19.1%, 100=7.7%
     lat (msec): 250=60.6%, 500=9.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12383
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.7%, 4=21.3%, 8=74.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.0%, 10=3.2%, 20=6.0%, 50=18.2%, 100=3.1%
     lat (msec): 250=56.7%, 500=8.6%, 750=1.3%, 1000=1.2%, >=2000=0.4%

Run status group 0 (all jobs):
   READ: io=226MiB, aggrb=7,054KiB/s, minb=0KiB/s, maxb=3,107KiB/s, mint=0msec, maxt=33598msec
  WRITE: io=114MiB, aggrb=3,879KiB/s, minb=0KiB/s, maxb=1,378KiB/s, mint=0msec, maxt=33598msec

Disk stats (read/write):
  sda: ios=3933/2369, merge=708/419, ticks=81428/36264, in_queue=117692, util=98.56%
0.09user 0.33system 0:36.13elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2513minor)pagefaults 0swaps