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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18743, got signal=6
Threads: 2
Threads: 2: [_mm] [60.0% done] [  6424/     0 kb/s] [eta 00m:02s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18744, got signal=6
Threads: 1: [__m] [66.7% done] [   852/ 11116 kb/s] [eta 00m:02s]
Threads: 1: [__m] [71.4% done] [   780/     0 kb/s] [eta 00m:02s]
Threads: 1: [__F] [100.0% done] [   308/  3364 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: [__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: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [70.6% done] [  1516/     0 kb/s] [eta 00m:05s]
Threads: 1: [__V] [86.7% done] [ 22936/     0 kb/s] [eta 00m:02s]
Threads: 1: [__V] [93.3% done] [  9088/     0 kb/s] [eta 00m:01s]
Threads: 1: [__V] [100.0% done] [ 15184/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [  9452/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 19800/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 10452/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=18743
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=95.8%, 4=2.8%, 8=1.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=89.6%, 4=8.2%, 10=0.4%, 20=0.1%, 50=0.0%, 100=0.1%
     lat (msec): 250=0.5%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18744
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=87.9%, 4=4.1%, 8=7.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=79.9%, 4=9.3%, 10=0.4%, 20=0.4%, 50=0.8%, 100=4.0%
     lat (msec): 250=5.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18745
  read : io=100MiB, bw=5,571KiB/s, runt= 18821msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  615, avg=57.13, stdev=81.55
    bw (KiB/s) : min=   23, max=35783, per=132.89%, avg=8188.46, stdev=9034.77
  write: io=94,552KiB, bw=8,210KiB/s, runt= 11792msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  271, avg= 1.68, stdev=15.03
    bw (KiB/s) : min=    0, max=114426, per=122.66%, avg=30716.00, stdev=55940.60
  cpu          : usr=4.17%, sys=2.36%, ctx=4630
  IO depths    : 1=1.9%, 2=50.4%, 4=30.3%, 8=17.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.0%, 4=1.4%, 10=12.1%, 20=12.2%, 50=10.6%, 100=8.3%
     lat (msec): 250=8.1%, 500=2.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=111MiB, aggrb=6,162KiB/s, minb=0KiB/s, maxb=5,571KiB/s, mint=18821msec, maxt=18821msec
  WRITE: io=282MiB, aggrb=25,041KiB/s, minb=0KiB/s, maxb=8,210KiB/s, mint=18821msec, maxt=18821msec

Disk stats (read/write):
  sda: ios=1506/2698, merge=444/54800, ticks=32728/2321696, in_queue=2581524, util=96.63%
2.87user 0.94system 0:19.24elapsed 19%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2484minor)pagefaults 0swaps