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: [FmF] [42.9% done] [  4835/ 13177 kb/s] [eta 00m:04s]
Threads: 3: [FmF] [44.4% done] [  1434/     0 kb/s] [eta 00m:05s]
Threads: 3: [FmF] [62.5% done] [   536/ 27875 kb/s] [eta 00m:03s]
Threads: 3: [FmF] [60.0% done] [   747/     0 kb/s] [eta 00m:04s]
Threads: 3: [FmF] [63.6% done] [   755/     0 kb/s] [eta 00m:04s]
Threads: 3: [FmF] [61.5% done] [   987/     0 kb/s] [eta 00m:05s]
Threads: 3: [FFF] [100.0% done] [   524/  8387 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=2918, got signal=6
Threads: 2: [VV_] [72.7% done] [ 22306/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [85.0% done] [ 30057/     0 kb/s] [eta 00m:03s]
Threads: 2: [VV_] [90.0% done] [ 33808/     0 kb/s] [eta 00m:02s]
Threads: 2: [VV_] [95.0% done] [ 29992/     0 kb/s] [eta 00m:01s]
Threads: 2: [VV_] [100.0% done] [ 29724/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [100.0% done] [ 27558/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=2916
  read : io=100MiB, bw=4,924KiB/s, runt= 21238msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  470, avg=36.90, stdev=68.30
    bw (KiB/s) : min=    6, max=34360, per=113.81%, avg=11217.47, stdev=10244.31
  write: io=93,384KiB, bw=6,284KiB/s, runt= 15216msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  175, avg= 1.33, stdev=11.04
    bw (KiB/s) : min=    0, max=44513, per=147.61%, avg=27708.33, stdev=24176.83
  cpu          : usr=3.69%, sys=1.94%, ctx=7233
  IO depths    : 1=1.0%, 2=52.1%, 4=31.7%, 8=15.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.9%, 4=3.1%, 10=16.1%, 20=18.0%, 50=6.9%, 100=3.1%
     lat (msec): 250=3.9%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2917
  read : io=100MiB, bw=4,866KiB/s, runt= 21545msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  658, avg=63.97, stdev=106.69
    bw (KiB/s) : min=    7, max=21654, per=66.18%, avg=6522.63, stdev=7216.70
  write: io=86,008KiB, bw=5,788KiB/s, runt= 15216msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  274, avg= 1.67, stdev=14.80
    bw (KiB/s) : min=    0, max=15219, per=39.48%, avg=7410.67, stdev=7617.29
  cpu          : usr=3.51%, sys=1.80%, ctx=7384
  IO depths    : 1=0.9%, 2=48.0%, 4=29.6%, 8=21.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.2%, 4=2.7%, 10=11.7%, 20=20.0%, 50=6.1%, 100=3.3%
     lat (msec): 250=7.6%, 500=4.0%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2918
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=97.0%, 4=1.6%, 8=1.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=97.5%, 4=0.3%, 10=0.0%, 20=0.1%, 50=0.1%, 100=0.3%
     lat (msec): 250=0.5%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=203MiB, aggrb=9,856KiB/s, minb=0KiB/s, maxb=4,924KiB/s, mint=0msec, maxt=21545msec
  WRITE: io=272MiB, aggrb=18,771KiB/s, minb=0KiB/s, maxb=6,284KiB/s, mint=0msec, maxt=21545msec

Disk stats (read/write):
  sda: ios=2498/2171, merge=783/67454, ticks=41588/1898980, in_queue=1943392, util=98.80%
2.40user 1.20system 0:21.87elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2484minor)pagefaults 0swaps