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: [mmF] [20.0% done] [  2042/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmF] [20.0% done] [  2745/   189 kb/s] [eta 00m:16s]
Threads: 3: [mmF] [22.7% done] [  2130/  2662 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16048, got signal=6
Threads: 2: [_FF] [100.0% done] [   413/119236 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] [70.6% done] [  2304/     0 kb/s] [eta 00m:05s]
Threads: 2: [_FV] [81.2% done] [ 17772/     0 kb/s] [eta 00m:03s]
Threads: 2: [_FV] [93.3% done] [ 20200/     0 kb/s] [eta 00m:01s]
Threads: 2: [_FV] [100.0% done] [ 25632/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [100.0% done] [ 25228/     0 kb/s] [eta 00m:00s]
Threads: 1: [_F_] [100.0% done] [ 11264/     0 kb/s] [eta 00m:00s]
Threads: 1: [_F_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [_F_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [_V_] [71.4% done] [  5160/     0 kb/s] [eta 00m:08s]
Threads: 1: [_V_] [95.5% done] [ 33924/     0 kb/s] [eta 00m:01s]
Threads: 1: [_V_] [100.0% done] [ 30653/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=16048
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=89.7%, 4=5.7%, 8=3.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=91.3%, 4=0.4%, 10=0.6%, 20=2.5%, 50=1.0%, 100=0.6%
     lat (msec): 250=0.4%, 500=0.5%, 750=0.9%, 1000=1.3%, >=2000=0.3%
fio: (groupid=0): err= 0: pid=16049
  read : io=100MiB, bw=4,534KiB/s, runt= 23106msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1090, avg=35.24, stdev=124.11
    bw (KiB/s) : min=   16, max=36814, per=127.86%, avg=11919.07, stdev=15640.82
  write: io=94,476KiB, bw=4,810KiB/s, runt= 20112msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  763, avg= 3.33, stdev=37.72
    bw (KiB/s) : min=    0, max=14679, per=33.22%, avg=4965.00, stdev=8413.26
  cpu          : usr=3.31%, sys=1.77%, ctx=6674
  IO depths    : 1=1.2%, 2=53.5%, 4=32.2%, 8=13.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.9%, 4=0.8%, 10=19.7%, 20=21.1%, 50=6.0%, 100=0.5%
     lat (msec): 250=1.1%, 500=0.6%, 750=0.3%, 1000=0.8%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=16050
  read : io=100MiB, bw=6,169KiB/s, runt= 16997msec
    clat (msec): min=    0, max=  325, avg=23.96, stdev=38.48
    bw (KiB/s) : min=    3, max=28221, per=189.15%, avg=17632.27, stdev=9435.57
  write: io=100MiB, bw=9,114KiB/s, runt= 11504msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   19, avg= 0.26, stdev= 1.11
    bw (KiB/s) : min=    0, max=136413, per=456.29%, avg=68206.50, stdev=96458.56
  cpu          : usr=5.04%, sys=2.17%, ctx=5342
  IO depths    : 1=1.2%, 2=55.8%, 4=32.2%, 8=10.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.7%, 4=0.7%, 10=20.4%, 20=16.5%, 50=4.1%, 100=5.5%
     lat (msec): 250=1.6%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=205MiB, aggrb=9,322KiB/s, minb=0KiB/s, maxb=6,169KiB/s, mint=16997msec, maxt=23106msec
  WRITE: io=287MiB, aggrb=14,948KiB/s, minb=0KiB/s, maxb=9,114KiB/s, mint=16997msec, maxt=23106msec

Disk stats (read/write):
  sda: ios=2180/2575, merge=733/70607, ticks=52168/2535112, in_queue=2589840, util=97.66%
2.47user 1.08system 0:23.61elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2487minor)pagefaults 0swaps