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] [50.0% done] [ 12612/ 52920 kb/s] [eta 00m:03s]
Threads: 3: [mFF] [66.7% done] [  1449/ 36699 kb/s] [eta 00m:02s]
Threads: 3: [mFF] [71.4% done] [   620/  3828 kb/s] [eta 00m:02s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20246, got signal=6
Threads: 2: [_FF] [100.0% done] [   576/     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: [_FF] [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=20247, got signal=6
Threads: 1: [__V] [76.5% done] [ 14448/     0 kb/s] [eta 00m:04s]
Threads: 1: [__V] [100.0% done] [ 40780/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=20246
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=79.1%, 4=6.2%, 8=14.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=66.2%, 4=12.0%, 10=4.0%, 20=1.3%, 50=1.9%, 100=8.0%
     lat (msec): 250=5.4%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20247
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=81.4%, 4=6.3%, 8=11.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=67.9%, 4=13.6%, 10=1.7%, 20=1.0%, 50=5.0%, 100=8.1%
     lat (msec): 250=2.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20248
  read : io=100MiB, bw=6,894KiB/s, runt= 15209msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  119, avg=13.91, stdev=19.06
    bw (KiB/s) : min=    5, max=43399, per=190.83%, avg=17964.73, stdev=19603.02
  write: io=88,016KiB, bw=6,945KiB/s, runt= 12976msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=   86, avg= 1.14, stdev= 5.15
    bw (KiB/s) : min=    0, max=28005, per=100.95%, avg=20343.50, stdev=13608.57
  cpu          : usr=12.12%, sys=4.89%, ctx=4612
  IO depths    : 1=13.6%, 2=47.7%, 4=27.9%, 8=10.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=41.5%, 4=5.9%, 10=41.5%, 20=2.7%, 50=4.8%, 100=3.2%
     lat (msec): 250=0.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=137MiB, aggrb=9,414KiB/s, minb=0KiB/s, maxb=6,894KiB/s, mint=15209msec, maxt=15209msec
  WRITE: io=249MiB, aggrb=20,152KiB/s, minb=0KiB/s, maxb=6,945KiB/s, mint=15209msec, maxt=15209msec

Disk stats (read/write):
  cciss!c0d0: ios=1750/3572, merge=5949/60206, ticks=26016/1413696, in_queue=1440856, util=93.39%
4.77user 1.65system 0:15.54elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
307736inputs+510768outputs (0major+2448minor)pagefaults 0swaps