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=32292, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32291, got signal=6
Threads: 1: [m__] [50.0% done] [   900/102128 kb/s] [eta 00m:03s]
Threads: 1: [m__] [50.0% done] [   948/     0 kb/s] [eta 00m:04s]
Threads: 1: [F__] [100.0% done] [   100/ 29012 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: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [85.0% done] [ 23376/     0 kb/s] [eta 00m:03s]
Threads: 1: [V__] [100.0% done] [ 37632/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=32290
  read : io=100MiB, bw=5,407KiB/s, runt= 19390msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  759, avg=27.02, stdev=77.53
    bw (KiB/s) : min=    6, max=39297, per=249.26%, avg=15608.50, stdev=16972.40
  write: io=92,888KiB, bw=5,735KiB/s, runt= 16584msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  496, avg= 2.61, stdev=25.08
    bw (KiB/s) : min=    0, max=37814, per=103.71%, avg=18023.00, stdev=18968.90
  cpu          : usr=4.48%, sys=2.00%, ctx=4797
  IO depths    : 1=1.7%, 2=56.2%, 4=30.5%, 8=11.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.6%, 4=2.2%, 10=25.8%, 20=14.1%, 50=6.3%, 100=0.9%
     lat (msec): 250=1.7%, 500=0.9%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32291
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=92.4%, 4=3.0%, 8=4.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=92.1%, 4=2.6%, 10=0.1%, 20=0.1%, 50=0.3%, 100=0.5%
     lat (msec): 250=3.8%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32292
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=90.7%, 4=4.2%, 8=4.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=92.5%, 4=0.5%, 10=0.0%, 20=0.2%, 50=0.4%, 100=2.5%
     lat (msec): 250=3.2%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=116MiB, aggrb=6,262KiB/s, minb=0KiB/s, maxb=5,407KiB/s, mint=0msec, maxt=19390msec
  WRITE: io=275MiB, aggrb=17,378KiB/s, minb=0KiB/s, maxb=5,735KiB/s, mint=0msec, maxt=19390msec

Disk stats (read/write):
  sda: ios=1372/3173, merge=477/66844, ticks=15360/2069800, in_queue=2090304, util=98.21%
2.57user 0.92system 0:19.77elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2485minor)pagefaults 0swaps