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] [42.9% done] [ 15070/ 25804 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25662, got signal=6
Threads: 2: [_mm] [66.7% done] [ 10534/ 65357 kb/s] [eta 00m:02s]
Threads: 2: [_mF] [71.4% done] [  3432/ 10803 kb/s] [eta 00m:02s]
Threads: 2: [_mF] [66.7% done] [  1195/     0 kb/s] [eta 00m:03s]
Threads: 2: [_FF] [100.0% done] [   183/  2570 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]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [75.0% done] [ 21694/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VV] [94.1% done] [ 67301/     0 kb/s] [eta 00m:01s]
Threads: 2: [_VV] [100.0% done] [ 59684/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=25662
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=86.8%, 4=3.4%, 8=9.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=71.0%, 4=15.8%, 10=1.5%, 20=0.1%, 50=0.6%, 100=6.5%
     lat (msec): 250=4.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25663
  read : io=100MiB, bw=6,095KiB/s, runt= 17201msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  354, avg=32.62, stdev=54.57
    bw (KiB/s) : min=   11, max=36228, per=82.68%, avg=10617.75, stdev=12700.11
  write: io=76,880KiB, bw=5,368KiB/s, runt= 14663msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  183, avg= 1.76, stdev=10.88
    bw (KiB/s) : min=    0, max=17098, per=61.39%, avg=10848.75, stdev=8015.35
  cpu          : usr=9.30%, sys=4.44%, ctx=8384
  IO depths    : 1=22.1%, 2=32.4%, 4=27.2%, 8=18.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=41.9%, 4=13.8%, 10=20.0%, 20=7.3%, 50=3.5%, 100=6.0%
     lat (msec): 250=6.4%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25664
  read : io=100MiB, bw=6,001KiB/s, runt= 17472msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  187, avg=22.91, stdev=33.53
    bw (KiB/s) : min=    3, max=32446, per=97.94%, avg=12576.83, stdev=13476.03
  write: io=88,176KiB, bw=6,159KiB/s, runt= 14659msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  131, avg= 0.62, stdev= 5.80
    bw (KiB/s) : min=    0, max=58112, per=131.29%, avg=23200.50, stdev=25550.57
  cpu          : usr=10.03%, sys=5.13%, ctx=8955
  IO depths    : 1=22.7%, 2=34.2%, 4=26.0%, 8=17.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.0%, 4=11.0%, 10=17.8%, 20=6.4%, 50=6.6%, 100=5.8%
     lat (msec): 250=4.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=214MiB, aggrb=12,842KiB/s, minb=0KiB/s, maxb=6,095KiB/s, mint=17201msec, maxt=17472msec
  WRITE: io=247MiB, aggrb=17,671KiB/s, minb=0KiB/s, maxb=6,159KiB/s, mint=17201msec, maxt=17472msec

Disk stats (read/write):
  cciss!c0d0: ios=4447/3691, merge=892/59471, ticks=32112/1540200, in_queue=1573060, util=95.39%
4.88user 2.09system 0:17.80elapsed 39%CPU (0avgtext+0avgdata 0maxresident)k
527144inputs+506232outputs (0major+2454minor)pagefaults 0swaps