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] [33.3% done] [ 14573/ 73113 kb/s] [eta 00m:06s]
Threads: 3: [mFm] [40.0% done] [ 10587/ 46430 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28085, got signal=6
Threads: 2: [_Fm] [50.0% done] [  3409/ 24677 kb/s] [eta 00m:05s]
Threads: 2: [_FF] [100.0% done] [     0/ 27838 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] [68.4% done] [   390/     0 kb/s] [eta 00m:06s]
Threads: 2: [_VV] [87.5% done] [ 57640/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [100.0% done] [ 58934/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=28085
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=85.3%, 4=4.6%, 8=9.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=70.2%, 4=15.2%, 10=2.4%, 20=0.1%, 50=1.5%, 100=4.6%
     lat (msec): 250=5.8%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28086
  read : io=100MiB, bw=6,579KiB/s, runt= 15938msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  183, avg=20.10, stdev=38.48
    bw (KiB/s) : min=   10, max=37753, per=114.11%, avg=15855.55, stdev=15453.06
  write: io=88,628KiB, bw=6,975KiB/s, runt= 13011msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  134, avg= 0.81, stdev= 5.39
    bw (KiB/s) : min=    0, max=59957, per=119.90%, avg=23398.25, stdev=25636.83
  cpu          : usr=11.42%, sys=5.30%, ctx=7109
  IO depths    : 1=9.4%, 2=53.6%, 4=25.7%, 8=11.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.5%, 4=14.2%, 10=21.7%, 20=2.5%, 50=2.3%, 100=2.1%
     lat (msec): 250=5.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28087
  read : io=100MiB, bw=6,616KiB/s, runt= 15822msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  275, avg=32.05, stdev=49.57
    bw (KiB/s) : min=   21, max=32459, per=93.07%, avg=12931.87, stdev=10386.61
  write: io=68,568KiB, bw=5,396KiB/s, runt= 13011msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  106, avg= 0.98, stdev= 6.46
    bw (KiB/s) : min=    0, max=53885, per=114.52%, avg=22346.67, stdev=28093.83
  cpu          : usr=8.34%, sys=4.83%, ctx=9481
  IO depths    : 1=34.6%, 2=19.2%, 4=27.5%, 8=18.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.4%, 4=11.9%, 10=21.1%, 20=5.4%, 50=2.9%, 100=6.4%
     lat (msec): 250=7.4%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=211MiB, aggrb=13,895KiB/s, minb=0KiB/s, maxb=6,616KiB/s, mint=15822msec, maxt=15938msec
  WRITE: io=242MiB, aggrb=19,514KiB/s, minb=0KiB/s, maxb=6,975KiB/s, mint=15822msec, maxt=15938msec

Disk stats (read/write):
  cciss!c0d0: ios=4506/3239, merge=1020/58690, ticks=36836/1382212, in_queue=1419276, util=97.88%
4.72user 2.10system 0:16.29elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
551696inputs+495936outputs (0major+2454minor)pagefaults 0swaps