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: [mmm] [12.5% done] [  8305/ 12210 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 11475/  8541 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.0% done] [ 10621/  6160 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [25.0% done] [  8976/ 10780 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 11373/  6257 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 10313/  5652 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  9167/  6042 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  9849/  5961 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  7501/  7537 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  9463/  4343 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  8183/  3957 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [ 10955/   910 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  6721/  4750 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5473/  4608 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5131/  4096 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6042/  2966 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  1686/  8053 kb/s] [eta 00m:12s]
Threads: 3: [mVm] [62.5% done] [  4815/  3563 kb/s] [eta 00m:12s]
Threads: 3: [mVm] [61.8% done] [ 21349/     0 kb/s] [eta 00m:13s]
Threads: 3: [mVm] [62.9% done] [ 19265/   268 kb/s] [eta 00m:13s]
Threads: 2: [m_m] [63.9% done] [  7931/  4678 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23102, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [V__] [66.7% done] [  2645/  5839 kb/s] [eta 00m:12s]
fio: pid=23100, got signal=6

fio: (groupid=0): err= 0: pid=23100
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.9%, 4=28.8%, 8=67.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.7%, 10=1.5%, 20=6.2%, 50=11.1%, 100=26.6%
     lat (msec): 250=46.9%, 500=4.5%, 750=0.7%, 1000=0.7%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23101
  read : io=100MiB, bw=4,648KiB/s, runt= 22557msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  242, avg=69.94, stdev=50.60
    bw (KiB/s) : min=  110, max=20389, per=51.82%, avg=5220.49, stdev=5715.53
  write: io=46,972KiB, bw=2,400KiB/s, runt= 20040msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  334, avg=79.84, stdev=64.23
    bw (KiB/s) : min=    0, max=11886, per=57.62%, avg=3892.44, stdev=3431.32
  cpu          : usr=0.50%, sys=0.51%, ctx=8020
  IO depths    : 1=0.3%, 2=2.3%, 4=35.9%, 8=61.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=1.4%, 10=3.3%, 20=15.0%, 50=24.1%, 100=25.1%
     lat (msec): 250=30.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23102
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.1%, 4=29.5%, 8=68.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.4%, 10=1.1%, 20=4.2%, 50=18.1%, 100=27.4%
     lat (msec): 250=44.4%, 500=2.2%, 750=0.7%, 1000=0.9%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=217MiB, aggrb=10,075KiB/s, minb=0KiB/s, maxb=4,648KiB/s, mint=0msec, maxt=22557msec
  WRITE: io=129MiB, aggrb=6,755KiB/s, minb=0KiB/s, maxb=2,400KiB/s, mint=0msec, maxt=22557msec

Disk stats (read/write):
  sda: ios=3593/2503, merge=627/188, ticks=47488/31676, in_queue=79164, util=99.00%
0.30user 0.41system 0:24.60elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps