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] [33.3% done] [  5755/ 52450 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [33.3% done] [  5054/     0 kb/s] [eta 00m:08s]
Threads: 3: [mFF] [45.5% done] [  1586/ 15241 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [46.2% done] [  1873/  2889 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [50.0% done] [   776/  5871 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [57.1% done] [   902/  4786 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3784, got signal=6
Threads: 2: [_FF] [100.0% done] [     0/ 20382 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] [76.5% done] [ 36762/     0 kb/s] [eta 00m:04s]
Threads: 2: [_VV] [100.0% done] [ 77698/     0 kb/s] [eta 00m:00s]
Threads: 1: [_EV] [100.0% done] [ 67218/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=3784
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=80.9%, 4=2.6%, 8=16.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=69.9%, 4=11.4%, 10=0.8%, 20=0.1%, 50=0.8%, 100=6.3%
     lat (msec): 250=4.5%, 500=5.7%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3785
  read : io=100MiB, bw=6,921KiB/s, runt= 15147msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  142, avg=13.62, stdev=30.49
    bw (KiB/s) : min=   22, max=41146, per=138.41%, avg=21552.00, stdev=18353.43
  write: io=92,376KiB, bw=7,543KiB/s, runt= 12540msec
    slat (msec): min=    0, max=    2, avg= 0.00, stdev= 0.05
    clat (msec): min=    0, max=   67, avg= 0.28, stdev= 2.76
    bw (KiB/s) : min=    0, max=92291, per=174.81%, avg=36965.33, stdev=48808.13
  cpu          : usr=9.59%, sys=3.62%, ctx=10461
  IO depths    : 1=47.9%, 2=20.8%, 4=22.9%, 8=8.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=60.7%, 4=13.9%, 10=17.8%, 20=1.3%, 50=0.6%, 100=2.7%
     lat (msec): 250=2.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3786
  read : io=100MiB, bw=6,881KiB/s, runt= 15237msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  275, avg=18.95, stdev=38.10
    bw (KiB/s) : min=   16, max=43892, per=102.92%, avg=16026.40, stdev=18124.43
  write: io=91,720KiB, bw=7,473KiB/s, runt= 12568msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  111, avg= 0.55, stdev= 4.52
    bw (KiB/s) : min=    0, max=61423, per=137.31%, avg=29035.00, stdev=30848.47
  cpu          : usr=11.26%, sys=4.54%, ctx=8921
  IO depths    : 1=34.5%, 2=26.6%, 4=25.7%, 8=13.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.4%, 4=14.7%, 10=18.5%, 20=4.3%, 50=5.1%, 100=1.6%
     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=226MiB, aggrb=15,571KiB/s, minb=0KiB/s, maxb=6,921KiB/s, mint=15147msec, maxt=15237msec
  WRITE: io=253MiB, aggrb=21,146KiB/s, minb=0KiB/s, maxb=7,543KiB/s, mint=15147msec, maxt=15237msec

Disk stats (read/write):
  cciss!c0d0: ios=2572/3389, merge=3007/61344, ticks=233844/1456064, in_queue=1692680, util=97.98%
4.54user 1.61system 0:15.53elapsed 39%CPU (0avgtext+0avgdata 0maxresident)k
504616inputs+519160outputs (0major+2448minor)pagefaults 0swaps