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: [mFF] [10.0% done] [  2572/ 35816 kb/s] [eta 00m:27s]
Threads: 3: [mFF] [36.4% done] [  1128/ 37216 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [38.5% done] [  1500/     0 kb/s] [eta 00m:08s]
Threads: 3: [mFF] [40.0% done] [  1760/  2156 kb/s] [eta 00m:09s]
Threads: 3: [mFF] [46.7% done] [  1596/  6588 kb/s] [eta 00m:08s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3747, got signal=6
Threads: 2: [_FF] [100.0% done] [     0/ 35080 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]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3748, got signal=6
Threads: 1: [__V] [69.6% done] [  1368/     0 kb/s] [eta 00m:07s]
Threads: 1: [__V] [89.5% done] [ 29197/     0 kb/s] [eta 00m:02s]
Threads: 1: [__V] [100.0% done] [ 38756/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=3747
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=85.8%, 4=3.8%, 8=10.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=87.8%, 4=0.2%, 10=0.0%, 20=0.1%, 50=0.4%, 100=1.3%
     lat (msec): 250=4.3%, 500=4.5%, 750=1.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3748
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=94.5%, 4=2.2%, 8=3.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=95.8%, 4=0.1%, 10=0.0%, 20=0.2%, 50=0.2%, 100=0.5%
     lat (msec): 250=2.3%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3749
  read : io=100MiB, bw=5,430KiB/s, runt= 19305msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  278, avg=22.12, stdev=36.38
    bw (KiB/s) : min=    7, max=38805, per=277.05%, avg=18534.45, stdev=16575.03
  write: io=95,656KiB, bw=6,079KiB/s, runt= 16112msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  175, avg= 0.50, stdev= 5.73
    bw (KiB/s) : min=    0, max=29434, per=83.70%, avg=14717.00, stdev=20812.98
  cpu          : usr=3.85%, sys=1.89%, ctx=4697
  IO depths    : 1=1.3%, 2=55.2%, 4=30.5%, 8=13.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.0%, 4=0.2%, 10=20.5%, 20=18.8%, 50=6.6%, 100=1.3%
     lat (msec): 250=3.2%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=123MiB, aggrb=6,690KiB/s, minb=0KiB/s, maxb=5,430KiB/s, mint=19305msec, maxt=19305msec
  WRITE: io=270MiB, aggrb=17,583KiB/s, minb=0KiB/s, maxb=6,079KiB/s, mint=19305msec, maxt=19305msec

Disk stats (read/write):
  sda: ios=1601/2568, merge=532/66436, ticks=24268/2257300, in_queue=2283440, util=98.21%
2.12user 0.93system 0:19.73elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2487minor)pagefaults 0swaps