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: [mFF] [42.9% done] [   812/     0 kb/s] [eta 00m:04s]
Threads: 3: [mFF] [44.4% done] [   944/     0 kb/s] [eta 00m:05s]
Threads: 3: [mFF] [45.5% done] [  1060/     0 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [46.2% done] [   644/     0 kb/s] [eta 00m:07s]
Threads: 3: [FFF] [100.0% done] [   396/ 35448 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15444, got signal=6
Threads: 2: [VV_] [68.2% done] [  7292/     0 kb/s] [eta 00m:07s]
Threads: 2: [VV_] [72.7% done] [ 27516/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [85.0% done] [ 27196/     0 kb/s] [eta 00m:03s]
Threads: 2: [VV_] [94.7% done] [ 35980/     0 kb/s] [eta 00m:01s]
Threads: 2: [VV_] [100.0% done] [ 35612/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [100.0% done] [ 28972/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=15442
  read : io=100MiB, bw=4,927KiB/s, runt= 21280msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  867, avg=52.98, stdev=119.73
    bw (KiB/s) : min=    0, max=33922, per=84.59%, avg=8336.00, stdev=9715.56
  write: io=93,004KiB, bw=6,355KiB/s, runt= 14984msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  206, avg= 0.53, stdev= 6.60
    bw (KiB/s) : min=    0, max= 9263, per=23.42%, avg=4631.50, stdev=6549.93
  cpu          : usr=3.72%, sys=2.16%, ctx=5039
  IO depths    : 1=1.8%, 2=55.8%, 4=29.5%, 8=12.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=1.0%, 10=22.4%, 20=11.3%, 50=6.7%, 100=1.7%
     lat (msec): 250=5.5%, 500=1.5%, 750=1.0%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15443
  read : io=100MiB, bw=5,057KiB/s, runt= 20734msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  398, avg=32.67, stdev=50.92
    bw (KiB/s) : min=    7, max=23470, per=128.78%, avg=12691.57, stdev=7339.20
  write: io=93,968KiB, bw=6,421KiB/s, runt= 14984msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  110, avg= 0.86, stdev= 7.04
    bw (KiB/s) : min=    0, max=50404, per=127.45%, avg=25202.00, stdev=35641.01
  cpu          : usr=3.61%, sys=1.89%, ctx=4751
  IO depths    : 1=1.3%, 2=54.0%, 4=31.2%, 8=13.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=0.8%, 10=16.9%, 20=15.0%, 50=9.6%, 100=3.3%
     lat (msec): 250=5.1%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15444
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=94.2%, 4=5.1%, 8=0.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=95.6%, 4=2.7%, 10=1.2%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=200MiB, aggrb=9,855KiB/s, minb=0KiB/s, maxb=5,057KiB/s, mint=0msec, maxt=21280msec
  WRITE: io=283MiB, aggrb=19,774KiB/s, minb=0KiB/s, maxb=6,421KiB/s, mint=0msec, maxt=21280msec

Disk stats (read/write):
  sda: ios=2201/2542, merge=879/69664, ticks=39280/1993980, in_queue=2033260, util=98.75%
2.44user 1.28system 0:21.59elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2478minor)pagefaults 0swaps