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=30898, got signal=6
Threads: 2: [_FF] [100.0% done] [   376/     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: [_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: [_VV] [68.0% done] [ 17120/     0 kb/s] [eta 00m:08s]
Threads: 2: [_VV] [78.3% done] [ 27248/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VV] [95.0% done] [ 30968/     0 kb/s] [eta 00m:01s]
Threads: 2: [_VV] [100.0% done] [ 36948/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [100.0% done] [ 38064/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [100.0% done] [ 33600/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=30898
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=91.0%, 4=4.3%, 8=4.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=91.4%, 4=2.2%, 10=0.5%, 20=0.1%, 50=0.2%, 100=2.9%
     lat (msec): 250=0.9%, 500=1.1%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30899
  read : io=100MiB, bw=4,595KiB/s, runt= 22818msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  327, avg=31.32, stdev=49.34
    bw (KiB/s) : min=    9, max=30089, per=141.10%, avg=13334.29, stdev=9284.37
  write: io=99,660KiB, bw=6,162KiB/s, runt= 16560msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  115, avg= 0.62, stdev= 4.55
    bw (KiB/s) : min=    0, max=51189, per=141.66%, avg=25594.50, stdev=36196.09
  cpu          : usr=4.15%, sys=2.19%, ctx=6084
  IO depths    : 1=1.3%, 2=53.6%, 4=33.1%, 8=12.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.2%, 4=3.0%, 10=18.9%, 20=16.3%, 50=6.3%, 100=1.7%
     lat (msec): 250=6.0%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30900
  read : io=100MiB, bw=4,537KiB/s, runt= 23101msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  620, avg=34.27, stdev=69.16
    bw (KiB/s) : min=    2, max=29541, per=124.04%, avg=11722.06, stdev=9849.95
  write: io=98,668KiB, bw=6,102KiB/s, runt= 16556msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  143, avg= 0.52, stdev= 4.47
    bw (KiB/s) : min=    0, max=32539, per=90.05%, avg=16269.50, stdev=23008.55
  cpu          : usr=3.60%, sys=2.03%, ctx=6299
  IO depths    : 1=1.4%, 2=55.6%, 4=30.9%, 8=12.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.7%, 4=2.0%, 10=21.5%, 20=15.9%, 50=5.3%, 100=1.7%
     lat (msec): 250=4.4%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=208MiB, aggrb=9,450KiB/s, minb=0KiB/s, maxb=4,595KiB/s, mint=22818msec, maxt=23101msec
  WRITE: io=285MiB, aggrb=18,068KiB/s, minb=0KiB/s, maxb=6,162KiB/s, mint=22818msec, maxt=23101msec

Disk stats (read/write):
  sda: ios=2235/3411, merge=823/69389, ticks=44844/2146676, in_queue=2194000, util=99.01%
2.66user 1.26system 0:23.36elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps