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=20309, got signal=6
Threads: 2: [_FF] [100.0% done] [     0/ 21849 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: [_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] [68.4% done] [    64/     0 kb/s] [eta 00m:06s]
Threads: 2: [_FV] [73.7% done] [  7440/     0 kb/s] [eta 00m:05s]
Threads: 2: [_FV] [88.2% done] [ 19836/     0 kb/s] [eta 00m:02s]
Threads: 2: [_FV] [94.1% done] [ 10292/     0 kb/s] [eta 00m:01s]
Threads: 2: [_FV] [100.0% done] [ 10972/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [100.0% done] [ 18724/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [100.0% done] [ 16512/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FV] [100.0% done] [ 10092/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20310, got signal=6

fio: (groupid=0): err= 0: pid=20309
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=93.1%, 4=2.8%, 8=3.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=85.8%, 4=9.3%, 10=0.3%, 20=0.1%, 50=0.2%, 100=0.7%
     lat (msec): 250=3.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20310
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=94.1%, 4=2.6%, 8=2.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=86.9%, 4=8.6%, 10=0.7%, 20=0.1%, 50=0.1%, 100=0.4%
     lat (msec): 250=1.8%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20311
  read : io=100MiB, bw=5,024KiB/s, runt= 20870msec
    clat (msec): min=    0, max=  398, avg=36.54, stdev=48.35
    bw (KiB/s) : min=    4, max=25165, per=228.85%, avg=12749.40, stdev=7398.07
  write: io=100MiB, bw=8,004KiB/s, runt= 13100msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   11, avg= 0.26, stdev= 0.70
    bw (KiB/s) : min=    0, max=116744, per=252.28%, avg=58372.00, stdev=82550.47
  cpu          : usr=4.02%, sys=1.84%, ctx=5346
  IO depths    : 1=1.1%, 2=55.4%, 4=32.1%, 8=11.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.5%, 4=1.6%, 10=14.9%, 20=12.7%, 50=9.7%, 100=6.2%
     lat (msec): 250=5.1%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=111MiB, aggrb=5,571KiB/s, minb=0KiB/s, maxb=5,024KiB/s, mint=20870msec, maxt=20870msec
  WRITE: io=289MiB, aggrb=23,138KiB/s, minb=0KiB/s, maxb=8,004KiB/s, mint=20870msec, maxt=20870msec

Disk stats (read/write):
  sda: ios=1251/3179, merge=373/70500, ticks=30116/2542204, in_queue=2656628, util=96.57%
2.95user 1.14system 0:21.25elapsed 19%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2500minor)pagefaults 0swaps