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] [30.0% done] [ 11243/ 74804 kb/s] [eta 00m:07s]
Threads: 3: [mmF] [40.0% done] [  3555/ 31555 kb/s] [eta 00m:06s]
Threads: 3: [mmF] [55.6% done] [  2149/ 26404 kb/s] [eta 00m:04s]
Threads: 3: [mFF] [66.7% done] [   837/ 23994 kb/s] [eta 00m:03s]
Threads: 3: [FFF] [100.0% done] [   715/  6048 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [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=24610, got signal=6
Threads: 2: [V_V] [82.4% done] [ 51755/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [100.0% done] [ 56400/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 62334/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=24609
  read : io=100MiB, bw=6,698KiB/s, runt= 15653msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  391, avg=31.04, stdev=70.27
    bw (KiB/s) : min=   16, max=45731, per=73.72%, avg=10358.65, stdev=15779.67
  write: io=87,304KiB, bw=6,781KiB/s, runt= 13183msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  355, avg= 2.81, stdev=20.68
    bw (KiB/s) : min=    0, max=58114, per=96.15%, avg=19504.60, stdev=23608.80
  cpu          : usr=11.19%, sys=4.91%, ctx=9241
  IO depths    : 1=29.8%, 2=33.1%, 4=24.7%, 8=12.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.0%, 4=13.5%, 10=22.6%, 20=4.5%, 50=1.8%, 100=1.2%
     lat (msec): 250=5.4%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24610
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=19.3%, 2=62.5%, 4=6.8%, 8=11.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=83.4%, 4=2.7%, 10=0.5%, 20=0.1%, 50=0.8%, 100=3.9%
     lat (msec): 250=5.9%, 500=2.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24611
  read : io=100MiB, bw=6,395KiB/s, runt= 16396msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  330, avg=19.33, stdev=45.38
    bw (KiB/s) : min=    0, max=49575, per=109.37%, avg=15368.20, stdev=15650.93
  write: io=91,676KiB, bw=7,121KiB/s, runt= 13183msec
    slat (msec): min=    0, max=    3, avg= 0.00, stdev= 0.08
    clat (msec): min=    0, max=  125, avg= 0.55, stdev= 5.34
    bw (KiB/s) : min=    0, max=60440, per=161.08%, avg=32677.25, stdev=29708.65
  cpu          : usr=10.83%, sys=4.68%, ctx=11438
  IO depths    : 1=52.2%, 2=13.4%, 4=24.6%, 8=9.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=56.1%, 4=12.3%, 10=20.2%, 20=4.2%, 50=0.7%, 100=2.2%
     lat (msec): 250=4.1%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=220MiB, aggrb=14,052KiB/s, minb=0KiB/s, maxb=6,698KiB/s, mint=16396msec, maxt=16396msec
  WRITE: io=255MiB, aggrb=20,286KiB/s, minb=0KiB/s, maxb=7,121KiB/s, mint=16396msec, maxt=16396msec

Disk stats (read/write):
  cciss!c0d0: ios=4283/3436, merge=1032/62015, ticks=39264/1598380, in_queue=1637640, util=94.94%
4.60user 2.14system 0:16.70elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
533800inputs+522384outputs (0major+2462minor)pagefaults 0swaps