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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13149, got signal=6
Threads: 2: [_mF] [33.3% done] [  2161/ 47404 kb/s] [eta 00m:06s]
Threads: 2: [_mF] [33.3% done] [  1722/     0 kb/s] [eta 00m:08s]
Threads: 2: [_mF] [62.5% done] [  1930/ 35787 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13150, got signal=6
Threads: 1: [__F] [100.0% done] [   459/ 16245 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: [__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] [68.0% done] [   268/     0 kb/s] [eta 00m:08s]
Threads: 1: [__V] [85.7% done] [ 28832/     0 kb/s] [eta 00m:03s]
Threads: 1: [__V] [100.0% done] [ 34700/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=13149
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=93.5%, 4=2.6%, 8=3.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=94.4%, 4=0.8%, 10=0.1%, 20=0.2%, 50=0.3%, 100=0.8%
     lat (msec): 250=2.8%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13150
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=87.9%, 4=2.6%, 8=9.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=88.3%, 4=0.4%, 10=0.1%, 20=0.1%, 50=0.2%, 100=1.0%
     lat (msec): 250=6.8%, 500=2.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13151
  read : io=100MiB, bw=5,158KiB/s, runt= 20326msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  225, avg=15.04, stdev=25.01
    bw (KiB/s) : min=    3, max=41410, per=358.61%, avg=22746.56, stdev=17643.34
  write: io=99,992KiB, bw=5,961KiB/s, runt= 17176msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   71, avg= 0.39, stdev= 3.03
    bw (KiB/s) : min=    0, max=59795, per=178.34%, avg=29897.50, stdev=42281.45
  cpu          : usr=3.88%, sys=1.99%, ctx=6421
  IO depths    : 1=1.7%, 2=57.9%, 4=30.7%, 8=9.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.2%, 4=0.1%, 10=27.5%, 20=14.9%, 50=4.0%, 100=1.1%
     lat (msec): 250=1.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=123MiB, aggrb=6,343KiB/s, minb=0KiB/s, maxb=5,158KiB/s, mint=20326msec, maxt=20326msec
  WRITE: io=275MiB, aggrb=16,764KiB/s, minb=0KiB/s, maxb=5,961KiB/s, mint=20326msec, maxt=20326msec

Disk stats (read/write):
  sda: ios=1424/3497, merge=495/66236, ticks=21356/2289832, in_queue=2319156, util=98.40%
2.25user 0.86system 0:20.63elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2486minor)pagefaults 0swaps