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: [mFm] [42.9% done] [  4160/ 84268 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23763, got signal=6
Threads: 2: [_Fm] [50.0% done] [   976/ 29504 kb/s] [eta 00m:04s]
Threads: 2: [_FF] [100.0% done] [     0/ 26476 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] [70.6% done] [ 16420/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VV] [86.7% done] [ 42564/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [100.0% done] [ 44208/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [100.0% done] [ 43630/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=23763
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=87.3%, 4=5.5%, 8=6.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=87.6%, 4=1.5%, 10=1.8%, 20=0.0%, 50=1.2%, 100=1.2%
     lat (msec): 250=5.8%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23764
  read : io=100MiB, bw=6,379KiB/s, runt= 16437msec
    clat (msec): min=    0, max=  414, avg=19.80, stdev=40.54
    bw (KiB/s) : min=    5, max=30224, per=145.40%, avg=19381.22, stdev=11127.09
  write: io=100MiB, bw=8,850KiB/s, runt= 11848msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    8, avg= 0.23, stdev= 0.64
    bw (KiB/s) : min=    0, max=126894, per=259.70%, avg=63447.00, stdev=89727.61
  cpu          : usr=4.92%, sys=2.70%, ctx=4262
  IO depths    : 1=2.0%, 2=59.4%, 4=30.0%, 8=8.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.0%, 4=0.5%, 10=28.3%, 20=13.6%, 50=0.9%, 100=0.5%
     lat (msec): 250=3.9%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23765
  read : io=100MiB, bw=6,551KiB/s, runt= 16005msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  617, avg=32.85, stdev=64.19
    bw (KiB/s) : min=    5, max=29488, per=92.01%, avg=12264.87, stdev=10099.63
  write: io=87,108KiB, bw=7,531KiB/s, runt= 11844msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  407, avg= 1.57, stdev=18.49
    bw (KiB/s) : min=    0, max=23987, per=49.09%, avg=11993.50, stdev=16961.37
  cpu          : usr=4.45%, sys=2.92%, ctx=4321
  IO depths    : 1=2.0%, 2=55.2%, 4=30.2%, 8=12.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.0%, 4=0.4%, 10=25.7%, 20=13.2%, 50=3.9%, 100=1.2%
     lat (msec): 250=6.6%, 500=0.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=209MiB, aggrb=13,330KiB/s, minb=0KiB/s, maxb=6,551KiB/s, mint=16005msec, maxt=16437msec
  WRITE: io=276MiB, aggrb=24,431KiB/s, minb=0KiB/s, maxb=8,850KiB/s, mint=16005msec, maxt=16437msec

Disk stats (read/write):
  sda: ios=2057/1731, merge=738/68668, ticks=21216/1401176, in_queue=1469492, util=98.61%
2.33user 1.21system 0:16.82elapsed 21%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2459minor)pagefaults 0swaps