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=11799, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11801, got signal=6
Threads: 1: [_m_] [37.5% done] [  4636/ 47150 kb/s] [eta 00m:05s]
Threads: 1: [_m_] [40.0% done] [  1124/     0 kb/s] [eta 00m:06s]
Threads: 1: [_m_] [41.7% done] [  1060/  4784 kb/s] [eta 00m:07s]
Threads: 1: [_m_] [42.9% done] [  1020/     0 kb/s] [eta 00m:08s]
Threads: 1: [_m_] [53.8% done] [  1048/ 12036 kb/s] [eta 00m:06s]
Threads: 1: [_m_] [53.3% done] [  1100/     0 kb/s] [eta 00m:07s]
Threads: 1: [_m_] [52.9% done] [  1424/     0 kb/s] [eta 00m:08s]
Threads: 1: [_m_] [55.6% done] [   804/     0 kb/s] [eta 00m:08s]
Threads: 1: [_m_] [55.0% done] [  1056/   192 kb/s] [eta 00m:09s]
Threads: 1: [_F_] [100.0% done] [     0/ 20119 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_] [70.4% done] [  2220/     0 kb/s] [eta 00m:08s]
Threads: 1: [_V_] [87.0% done] [ 28144/     0 kb/s] [eta 00m:03s]
Threads: 1: [_V_] [100.0% done] [ 27963/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=11799
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=91.8%, 4=3.5%, 8=4.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=92.4%, 4=0.9%, 10=0.1%, 20=0.2%, 50=0.6%, 100=1.2%
     lat (msec): 250=3.7%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11800
  read : io=100MiB, bw=4,706KiB/s, runt= 22281msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  607, avg=63.78, stdev=123.87
    bw (KiB/s) : min=   20, max=30048, per=130.68%, avg=6838.41, stdev=10739.01
  write: io=79,888KiB, bw=4,230KiB/s, runt= 19336msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  467, avg= 3.84, stdev=30.80
    bw (KiB/s) : min=    0, max=14945, per=35.49%, avg=5135.00, stdev=6677.88
  cpu          : usr=2.80%, sys=1.49%, ctx=5190
  IO depths    : 1=1.8%, 2=51.4%, 4=28.8%, 8=18.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.0%, 4=0.2%, 10=16.4%, 20=19.0%, 50=7.9%, 100=2.5%
     lat (msec): 250=3.1%, 500=4.8%, 750=0.9%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11801
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=87.6%, 4=4.3%, 8=7.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=86.8%, 4=2.0%, 10=1.1%, 20=1.5%, 50=0.4%, 100=2.4%
     lat (msec): 250=5.4%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=111MiB, aggrb=5,233KiB/s, minb=0KiB/s, maxb=4,706KiB/s, mint=0msec, maxt=22281msec
  WRITE: io=267MiB, aggrb=14,467KiB/s, minb=0KiB/s, maxb=4,230KiB/s, mint=0msec, maxt=22281msec

Disk stats (read/write):
  sda: ios=1720/3692, merge=396/64304, ticks=24680/2581576, in_queue=2610360, util=96.79%
2.22user 0.78system 0:22.96elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2489minor)pagefaults 0swaps