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: [FFm] [50.0% done] [  6064/ 87200 kb/s] [eta 00m:03s]
Threads: 3: [FFm] [66.7% done] [   772/ 31240 kb/s] [eta 00m:02s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=617, got signal=6
Threads: 2: [FF_] [100.0% done] [   399/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [FV_] [66.7% done] [     0/     0 kb/s] [eta 00m:07s]
Threads: 2: [FV_] [71.4% done] [  6635/     0 kb/s] [eta 00m:06s]
Threads: 2: [FV_] [76.2% done] [  7318/     0 kb/s] [eta 00m:05s]
Threads: 2: [FV_] [89.5% done] [ 14778/     0 kb/s] [eta 00m:02s]
Threads: 2: [VV_] [69.2% done] [ 24864/     0 kb/s] [eta 00m:08s]
Threads: 2: [VV_] [76.0% done] [ 29066/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [83.3% done] [ 27867/     0 kb/s] [eta 00m:04s]
Threads: 1: [V__] [100.0% done] [ 37424/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [100.0% done] [ 36225/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=615
  read : io=100MiB, bw=4,670KiB/s, runt= 22449msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  431, avg=31.69, stdev=56.20
    bw (KiB/s) : min=    0, max=37830, per=138.35%, avg=13546.33, stdev=13132.85
  write: io=88,516KiB, bw=5,152KiB/s, runt= 17592msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  182, avg= 1.24, stdev=11.89
    bw (KiB/s) : min=    0, max=21724, per=67.25%, avg=10862.00, stdev=15361.19
  cpu          : usr=3.21%, sys=1.89%, ctx=5680
  IO depths    : 1=1.2%, 2=53.3%, 4=30.6%, 8=14.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=1.5%, 10=17.7%, 20=18.2%, 50=5.7%, 100=2.5%
     lat (msec): 250=5.0%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=616
  read : io=100MiB, bw=5,016KiB/s, runt= 20902msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  335, avg=39.87, stdev=55.88
    bw (KiB/s) : min=   20, max=28802, per=114.32%, avg=11193.24, stdev=8692.76
  write: io=96,528KiB, bw=7,036KiB/s, runt= 14048msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  103, avg= 0.46, stdev= 3.52
    bw (KiB/s) : min=    0, max=26029, per=80.58%, avg=13014.50, stdev=18405.28
  cpu          : usr=4.00%, sys=1.82%, ctx=4797
  IO depths    : 1=1.0%, 2=53.1%, 4=32.1%, 8=13.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.5%, 4=1.4%, 10=16.2%, 20=14.2%, 50=8.9%, 100=4.5%
     lat (msec): 250=6.7%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=617
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=87.9%, 4=2.3%, 8=9.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=88.1%, 4=0.4%, 10=0.0%, 20=0.1%, 50=0.2%, 100=2.8%
     lat (msec): 250=5.8%, 500=1.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=210MiB, aggrb=9,791KiB/s, minb=0KiB/s, maxb=5,016KiB/s, mint=0msec, maxt=22449msec
  WRITE: io=271MiB, aggrb=16,151KiB/s, minb=0KiB/s, maxb=7,036KiB/s, mint=0msec, maxt=22449msec

Disk stats (read/write):
  sda: ios=2415/2610, merge=712/66546, ticks=38268/2015372, in_queue=2067548, util=98.71%
2.36user 1.12system 0:22.79elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps