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] [37.5% done] [ 15311/ 42146 kb/s] [eta 00m:05s]
Threads: 3: [mmm] [40.0% done] [ 13463/ 65670 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5711, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5712, got signal=6
Threads: 1: [m__] [50.0% done] [ 11845/  9675 kb/s] [eta 00m:05s]
Threads: 1: [m__] [60.0% done] [   959/ 20085 kb/s] [eta 00m:04s]
Threads: 1: [m__] [70.0% done] [   967/  6351 kb/s] [eta 00m:03s]
Threads: 1: [F__] [100.0% done] [     0/  3242 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [88.9% done] [ 30976/     0 kb/s] [eta 00m:02s]
fio: (groupid=0): err= 0: pid=5710
  read : io=100MiB, bw=6,216KiB/s, runt= 16868msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  498, avg=32.57, stdev=66.42
    bw (KiB/s) : min=    2, max=55659, per=134.55%, avg=10986.06, stdev=17222.12
  write: io=67,912KiB, bw=4,482KiB/s, runt= 15515msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  307, avg= 3.84, stdev=21.94
    bw (KiB/s) : min=    0, max=12182, per=46.54%, avg=7386.25, stdev=5293.99
  cpu          : usr=8.47%, sys=4.62%, ctx=6170
  IO depths    : 1=1.3%, 2=46.9%, 4=30.2%, 8=21.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=37.0%, 4=13.5%, 10=23.4%, 20=8.6%, 50=5.8%, 100=6.1%
     lat (msec): 250=3.9%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5711
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=27.3%, 2=57.9%, 4=3.0%, 8=11.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=81.3%, 4=3.1%, 10=1.1%, 20=0.8%, 50=2.2%, 100=6.5%
     lat (msec): 250=4.2%, 500=0.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5712
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=80.1%, 4=6.5%, 8=13.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=67.3%, 4=13.6%, 10=1.3%, 20=1.7%, 50=5.6%, 100=5.2%
     lat (msec): 250=4.3%, 500=0.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=131MiB, aggrb=8,165KiB/s, minb=0KiB/s, maxb=6,216KiB/s, mint=0msec, maxt=16868msec
  WRITE: io=235MiB, aggrb=15,871KiB/s, minb=0KiB/s, maxb=4,482KiB/s, mint=0msec, maxt=16868msec

Disk stats (read/write):
  cciss!c0d0: ios=2964/3809, merge=622/56168, ticks=24132/1533408, in_queue=1558052, util=97.31%
4.18user 1.41system 0:17.17elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k
350384inputs+481064outputs (0major+2465minor)pagefaults 0swaps