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] [8.6% done] [ 14028/  2464 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [10.0% done] [ 13092/  2136 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [13.2% done] [ 11328/  4840 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [16.2% done] [  9356/  5436 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [  6596/  7224 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [19.5% done] [  9377/  2346 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [22.0% done] [ 11440/   628 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [25.0% done] [  8912/  5240 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [28.2% done] [  9184/  3712 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [29.3% done] [  5244/  6880 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [32.5% done] [ 11572/  1256 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.1% done] [  6024/  4804 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  4328/  6380 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  8904/  1509 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  3772/  6184 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  7500/  2228 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.2% done] [  1248/  7048 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [43.5% done] [  4692/  2104 kb/s] [eta 00m:26s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2405, got signal=6
Threads: 2: [m_m] [45.7% done] [  5032/  4548 kb/s] [eta 00m:25s]
Threads: 2: [m_m] [46.8% done] [  4444/  3620 kb/s] [eta 00m:25s]
Threads: 2: [m_m] [48.9% done] [  4084/  3784 kb/s] [eta 00m:24s]
Threads: 2: [m_V] [50.0% done] [ 10356/  1184 kb/s] [eta 00m:24s]
Threads: 2: [m_V] [50.0% done] [ 16172/   452 kb/s] [eta 00m:25s]
Threads: 1: [m__] [51.0% done] [ 12456/  1716 kb/s] [eta 00m:25s]
Threads: 1: [m__] [58.7% done] [  3359/  7138 kb/s] [eta 00m:19s]
Threads: 1: [m__] [65.1% done] [  5216/  4072 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2404, got signal=6

fio: (groupid=0): err= 0: pid=2404
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.0%, 4=31.2%, 8=66.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.3%, 10=1.8%, 20=7.4%, 50=32.5%, 100=10.9%
     lat (msec): 250=29.0%, 500=12.5%, 750=1.9%, 1000=2.2%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=2405
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.9%, 4=28.3%, 8=69.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=0.5%, 20=4.6%, 50=22.4%, 100=24.2%
     lat (msec): 250=45.1%, 500=2.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2406
  read : io=100MiB, bw=3,963KiB/s, runt= 26453msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  747, avg=86.49, stdev=77.62
    bw (KiB/s) : min=   27, max=17309, per=47.41%, avg=4314.88, stdev=3985.07
  write: io=38,200KiB, bw=1,658KiB/s, runt= 23584msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  883, avg=86.84, stdev=105.27
    bw (KiB/s) : min=    0, max= 9535, per=47.26%, avg=2257.85, stdev=2574.27
  cpu          : usr=0.18%, sys=0.24%, ctx=8431
  IO depths    : 1=0.7%, 2=3.8%, 4=33.2%, 8=62.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.2%, 10=3.2%, 20=13.5%, 50=26.8%, 100=20.9%
     lat (msec): 250=31.5%, 500=2.4%, 750=0.6%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=230MiB, aggrb=9,102KiB/s, minb=0KiB/s, maxb=3,963KiB/s, mint=26453msec, maxt=26453msec
  WRITE: io=107MiB, aggrb=4,778KiB/s, minb=0KiB/s, maxb=1,658KiB/s, mint=26453msec, maxt=26453msec

Disk stats (read/write):
  sda: ios=4106/2457, merge=686/125, ticks=60928/29608, in_queue=90536, util=99.08%
0.18user 0.32system 0:29.79elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2484minor)pagefaults 0swaps