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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29443, got signal=6
Threads: 2
Threads: 2
Threads: 2: [F_m] [50.0% done] [  5022/ 40896 kb/s] [eta 00m:03s]
Threads: 2: [F_m] [44.4% done] [   819/     0 kb/s] [eta 00m:05s]
Threads: 2: [F_m] [45.5% done] [   527/     0 kb/s] [eta 00m:06s]
Threads: 2: [F_m] [46.2% done] [   279/    86 kb/s] [eta 00m:07s]
Threads: 2: [V_m] [46.7% done] [ 11000/     0 kb/s] [eta 00m:08s]
Threads: 2: [V_m] [47.1% done] [ 19188/     0 kb/s] [eta 00m:09s]
Threads: 2: [V_m] [47.4% done] [ 24650/     0 kb/s] [eta 00m:10s]
Threads: 2: [V_m] [47.6% done] [ 25194/   480 kb/s] [eta 00m:11s]
Threads: 1: [__m] [47.8% done] [ 15230/     0 kb/s] [eta 00m:12s]
Threads: 1: [__F] [100.0% done] [   319/ 28770 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] [75.0% done] [  8700/     0 kb/s] [eta 00m:07s]
Threads: 1: [__V] [95.7% done] [ 32161/     0 kb/s] [eta 00m:01s]
Threads: 1: [__V] [100.0% done] [ 34496/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=29442
  read : io=100MiB, bw=9,557KiB/s, runt= 10971msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  429, avg=27.29, stdev=45.30
    bw (KiB/s) : min=   19, max=28021, per=168.60%, avg=15172.46, stdev=10324.54
  write: io=92,396KiB, bw=14,087KiB/s, runt=  6716msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  127, avg= 0.81, stdev= 7.70
    bw (KiB/s) : min=    0, max=34171, per=119.69%, avg=17085.50, stdev=24162.55
  cpu          : usr=6.34%, sys=3.94%, ctx=3670
  IO depths    : 1=3.0%, 2=57.3%, 4=28.8%, 8=11.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.2%, 4=0.3%, 10=13.4%, 20=17.7%, 50=11.0%, 100=4.5%
     lat (msec): 250=2.4%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29443
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=96.6%, 4=3.1%, 8=0.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=95.8%, 4=3.5%, 10=0.0%, 20=0.5%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29444
  read : io=100MiB, bw=4,499KiB/s, runt= 23301msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1456, avg=65.30, stdev=163.38
    bw (KiB/s) : min=    3, max=36216, per=81.72%, avg=7353.82, stdev=12387.68
  write: io=86,544KiB, bw=4,391KiB/s, runt= 20180msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1173, avg= 5.92, stdev=61.37
    bw (KiB/s) : min=    0, max=10430, per=18.78%, avg=2681.25, stdev=5167.30
  cpu          : usr=3.19%, sys=1.79%, ctx=5085
  IO depths    : 1=2.8%, 2=54.5%, 4=28.0%, 8=14.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.5%, 4=1.3%, 10=15.0%, 20=19.5%, 50=8.7%, 100=1.9%
     lat (msec): 250=3.5%, 500=2.1%, 750=1.6%, 1000=0.5%, >=2000=0.3%

Run status group 0 (all jobs):
   READ: io=200MiB, aggrb=8,999KiB/s, minb=0KiB/s, maxb=9,557KiB/s, mint=23301msec, maxt=23301msec
  WRITE: io=275MiB, aggrb=14,275KiB/s, minb=0KiB/s, maxb=14,087KiB/s, mint=23301msec, maxt=23301msec

Disk stats (read/write):
  sda: ios=2532/3066, merge=929/67134, ticks=35092/2683260, in_queue=2720376, util=97.20%
2.33user 1.10system 0:23.67elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2485minor)pagefaults 0swaps