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: [Fmm] [33.3% done] [ 14651/ 41854 kb/s] [eta 00m:06s]
Threads: 3: [Fmm] [66.7% done] [  2070/ 72218 kb/s] [eta 00m:02s]
Threads: 3: [Fmm] [62.5% done] [  3489/     0 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31695, got signal=6
Threads: 2: [F_m] [66.7% done] [  3087/     0 kb/s] [eta 00m:03s]
Threads: 2: [F_m] [70.0% done] [   451/  9090 kb/s] [eta 00m:03s]
Threads: 2: [F_F] [100.0% done] [   414/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [68.4% done] [ 17603/     0 kb/s] [eta 00m:06s]
Threads: 2: [V_V] [87.5% done] [ 59141/     0 kb/s] [eta 00m:02s]
Threads: 2: [V_V] [100.0% done] [ 62855/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=31694
  read : io=100MiB, bw=6,610KiB/s, runt= 15863msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  196, avg=16.29, stdev=35.14
    bw (KiB/s) : min=    3, max=52133, per=132.57%, avg=19941.44, stdev=17100.10
  write: io=92,436KiB, bw=7,401KiB/s, runt= 12788msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  135, avg= 1.25, stdev= 7.31
    bw (KiB/s) : min=    0, max=60770, per=178.48%, avg=35642.00, stdev=29621.21
  cpu          : usr=12.76%, sys=4.54%, ctx=6334
  IO depths    : 1=2.6%, 2=63.8%, 4=24.9%, 8=8.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=21.1%, 10=20.7%, 20=2.7%, 50=1.0%, 100=1.2%
     lat (msec): 250=4.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31695
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=72.0%, 4=8.0%, 8=19.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=59.9%, 4=12.5%, 10=1.8%, 20=3.2%, 50=5.5%, 100=8.8%
     lat (msec): 250=6.7%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31696
  read : io=100MiB, bw=6,575KiB/s, runt= 15889msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  455, avg=37.98, stdev=69.27
    bw (KiB/s) : min=   12, max=37728, per=56.52%, avg=8502.35, stdev=11905.25
  write: io=83,600KiB, bw=6,694KiB/s, runt= 12787msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  326, avg= 2.41, stdev=16.81
    bw (KiB/s) : min=    0, max=27475, per=56.03%, avg=11189.25, stdev=11646.96
  cpu          : usr=11.10%, sys=4.73%, ctx=7346
  IO depths    : 1=13.4%, 2=43.0%, 4=27.2%, 8=16.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=40.7%, 4=17.2%, 10=21.5%, 20=4.0%, 50=3.1%, 100=5.4%
     lat (msec): 250=6.6%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=228MiB, aggrb=15,042KiB/s, minb=0KiB/s, maxb=6,610KiB/s, mint=15889msec, maxt=15889msec
  WRITE: io=244MiB, aggrb=19,970KiB/s, minb=0KiB/s, maxb=7,401KiB/s, mint=15889msec, maxt=15889msec

Disk stats (read/write):
  cciss!c0d0: ios=4573/3347, merge=1008/58988, ticks=38124/1440344, in_queue=1478460, util=98.42%
5.11user 1.84system 0:16.17elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k
553800inputs+498816outputs (0major+2450minor)pagefaults 0swaps