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: [mFm] [23.1% done] [ 11687/ 49676 kb/s] [eta 00m:10s]
Threads: 3: [mFm] [50.0% done] [  2524/ 87680 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2288, got signal=6
Threads: 2: [mF_] [50.0% done] [   800/     8 kb/s] [eta 00m:05s]
Threads: 2: [mF_] [54.5% done] [  1032/     0 kb/s] [eta 00m:05s]
Threads: 2: [mF_] [53.8% done] [   656/  1158 kb/s] [eta 00m:06s]
Threads: 2: [mF_] [57.1% done] [   831/  6754 kb/s] [eta 00m:06s]
Threads: 2: [mF_] [60.0% done] [   716/     0 kb/s] [eta 00m:06s]
Threads: 2: [mF_] [58.8% done] [   980/     0 kb/s] [eta 00m:07s]
Threads: 2: [FF_] [100.0% done] [   397/ 13185 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FV_] [68.4% done] [   181/     0 kb/s] [eta 00m:06s]
Threads: 2: [FV_] [82.4% done] [ 20330/     0 kb/s] [eta 00m:03s]
Threads: 2: [FV_] [93.8% done] [ 13669/     0 kb/s] [eta 00m:01s]
Threads: 2: [VV_] [69.6% done] [ 17844/     0 kb/s] [eta 00m:07s]
Threads: 2: [VV_] [77.3% done] [ 36568/     0 kb/s] [eta 00m:05s]
Threads: 1: [V__] [90.0% done] [ 33602/     0 kb/s] [eta 00m:02s]
Threads: 1: [V__] [100.0% done] [ 36663/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=2286
  read : io=100MiB, bw=5,230KiB/s, runt= 20047msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  773, avg=59.09, stdev=113.61
    bw (KiB/s) : min=   14, max=36929, per=60.19%, avg=6711.12, stdev=9925.22
  write: io=77,884KiB, bw=4,849KiB/s, runt= 16444msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  491, avg= 5.00, stdev=34.41
    bw (KiB/s) : min=    0, max=15820, per=34.40%, avg=5579.80, stdev=6695.23
  cpu          : usr=3.69%, sys=2.31%, ctx=5552
  IO depths    : 1=4.2%, 2=53.8%, 4=25.9%, 8=16.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.0%, 4=2.1%, 10=17.2%, 20=20.3%, 50=4.2%, 100=1.2%
     lat (msec): 250=7.1%, 500=3.9%, 750=0.7%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2287
  read : io=100MiB, bw=5,662KiB/s, runt= 18514msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  311, avg=29.72, stdev=44.08
    bw (KiB/s) : min=    2, max=27323, per=127.76%, avg=14244.69, stdev=8291.01
  write: io=93,688KiB, bw=7,183KiB/s, runt= 13356msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  115, avg= 0.52, stdev= 4.84
    bw (KiB/s) : min=    0, max=103399, per=318.78%, avg=51699.50, stdev=73114.13
  cpu          : usr=4.67%, sys=2.40%, ctx=5064
  IO depths    : 1=3.2%, 2=58.0%, 4=27.9%, 8=10.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.3%, 4=1.9%, 10=15.0%, 20=17.6%, 50=8.5%, 100=3.8%
     lat (msec): 250=4.3%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2288
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=86.8%, 4=2.8%, 8=9.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=87.3%, 4=0.6%, 10=0.1%, 20=0.2%, 50=0.4%, 100=3.4%
     lat (msec): 250=6.0%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=213MiB, aggrb=11,150KiB/s, minb=0KiB/s, maxb=5,662KiB/s, mint=0msec, maxt=20047msec
  WRITE: io=254MiB, aggrb=16,218KiB/s, minb=0KiB/s, maxb=7,183KiB/s, mint=0msec, maxt=20047msec

Disk stats (read/write):
  sda: ios=2488/2472, merge=945/62208, ticks=26544/1861004, in_queue=1913072, util=95.06%
2.35user 1.17system 0:20.48elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2472minor)pagefaults 0swaps