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
Threads: 3: [Fmm] [30.0% done] [  9247/     0 kb/s] [eta 00m:07s]
Threads: 3: [FmF] [33.3% done] [  1721/ 17332 kb/s] [eta 00m:08s]
Threads: 3: [FmF] [33.3% done] [  1428/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2581, got signal=6
Threads: 2: [F_F] [100.0% done] [   812/ 51716 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_V] [66.7% done] [     0/     0 kb/s] [eta 00m:07s]
Threads: 2: [F_V] [78.9% done] [ 13428/     0 kb/s] [eta 00m:04s]
Threads: 2: [F_V] [84.2% done] [ 10164/     0 kb/s] [eta 00m:03s]
Threads: 2: [F_V] [89.5% done] [  6932/     0 kb/s] [eta 00m:02s]
Threads: 2: [F_V] [94.7% done] [ 10340/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [67.9% done] [ 29180/     0 kb/s] [eta 00m:09s]
Threads: 2: [V_V] [76.9% done] [ 27816/     0 kb/s] [eta 00m:06s]
Threads: 1: [V__] [91.3% done] [ 33308/     0 kb/s] [eta 00m:02s]
Threads: 1: [V__] [100.0% done] [ 41532/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=2580
  read : io=100MiB, bw=4,480KiB/s, runt= 23405msec
    clat (msec): min=    0, max=  521, avg=17.00, stdev=39.80
    bw (KiB/s) : min=    0, max=42835, per=236.20%, avg=22824.22, stdev=16796.17
  write: io=100MiB, bw=5,455KiB/s, runt= 19220msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   14, avg= 0.31, stdev= 1.12
    bw (KiB/s) : min=    0, max=114933, per=379.22%, avg=57466.50, stdev=81269.90
  cpu          : usr=3.55%, sys=1.67%, ctx=5108
  IO depths    : 1=3.8%, 2=60.0%, 4=28.3%, 8=7.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.2%, 4=1.0%, 10=26.7%, 20=15.2%, 50=3.3%, 100=0.8%
     lat (msec): 250=1.3%, 500=0.2%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2581
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=87.6%, 4=2.9%, 8=9.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=80.2%, 4=7.7%, 10=1.1%, 20=0.1%, 50=0.0%, 100=0.9%
     lat (msec): 250=6.5%, 500=2.4%, 750=0.9%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2582
  read : io=100MiB, bw=4,952KiB/s, runt= 21169msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  326, avg=38.70, stdev=51.34
    bw (KiB/s) : min=   16, max=31427, per=106.47%, avg=10288.00, stdev=9881.63
  write: io=95,784KiB, bw=6,811KiB/s, runt= 14400msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  159, avg= 1.00, stdev= 7.92
    bw (KiB/s) : min=    0, max=29649, per=115.52%, avg=17505.33, stdev=15534.68
  cpu          : usr=4.52%, sys=1.95%, ctx=5022
  IO depths    : 1=2.2%, 2=54.3%, 4=29.5%, 8=14.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.9%, 4=3.4%, 10=14.3%, 20=14.6%, 50=9.7%, 100=6.7%
     lat (msec): 250=5.7%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=216MiB, aggrb=9,663KiB/s, minb=0KiB/s, maxb=4,952KiB/s, mint=21169msec, maxt=23405msec
  WRITE: io=278MiB, aggrb=15,154KiB/s, minb=0KiB/s, maxb=6,811KiB/s, mint=21169msec, maxt=23405msec

Disk stats (read/write):
  sda: ios=2447/2692, merge=754/68175, ticks=41644/2473712, in_queue=2535924, util=95.12%
2.75user 1.05system 0:23.86elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps