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] [30.0% done] [  6548/ 21114 kb/s] [eta 00m:07s]
Threads: 3: [Fmm] [33.3% done] [  4144/ 39804 kb/s] [eta 00m:08s]
Threads: 3: [FmF] [35.7% done] [  3266/ 12523 kb/s] [eta 00m:09s]
Threads: 3: [FmF] [46.2% done] [  2115/ 13239 kb/s] [eta 00m:07s]
Threads: 3: [FmF] [50.0% done] [  1317/  4132 kb/s] [eta 00m:07s]
Threads: 3: [FmF] [57.1% done] [  1086/  9298 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [60.0% done] [   752/  7374 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [62.5% done] [  1210/     0 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [61.1% done] [   797/     0 kb/s] [eta 00m:07s]
Threads: 3: [FmF] [63.2% done] [  1281/     0 kb/s] [eta 00m:07s]
Threads: 3: [FmF] [61.9% done] [  1293/     0 kb/s] [eta 00m:08s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6820, got signal=6
Threads: 2: [V_V] [70.0% done] [  7208/  7159 kb/s] [eta 00m:06s]
Threads: 2: [V_V] [83.3% done] [ 64169/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [100.0% done] [ 63223/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=6819
  read : io=100MiB, bw=6,191KiB/s, runt= 16937msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  335, avg=20.40, stdev=43.44
    bw (KiB/s) : min=   10, max=32923, per=104.09%, avg=14885.36, stdev=12590.11
  write: io=84,596KiB, bw=6,195KiB/s, runt= 13983msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  175, avg= 1.21, stdev= 7.19
    bw (KiB/s) : min=    0, max=59908, per=177.61%, avg=32385.50, stdev=30959.59
  cpu          : usr=10.93%, sys=3.94%, ctx=6416
  IO depths    : 1=1.6%, 2=60.8%, 4=25.7%, 8=11.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.9%, 4=19.4%, 10=21.6%, 20=2.4%, 50=1.3%, 100=4.4%
     lat (msec): 250=3.5%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6820
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=67.1%, 4=6.4%, 8=26.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=54.6%, 4=12.2%, 10=2.1%, 20=0.6%, 50=0.4%, 100=7.2%
     lat (msec): 250=11.3%, 500=11.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6821
  read : io=100MiB, bw=6,338KiB/s, runt= 16541msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  379, avg=22.42, stdev=53.44
    bw (KiB/s) : min=   21, max=53671, per=101.50%, avg=14514.33, stdev=19796.38
  write: io=93,900KiB, bw=6,876KiB/s, runt= 13983msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  219, avg= 1.58, stdev= 9.97
    bw (KiB/s) : min=    0, max=61276, per=142.62%, avg=26005.60, stdev=31992.39
  cpu          : usr=12.28%, sys=5.37%, ctx=6360
  IO depths    : 1=1.6%, 2=61.0%, 4=27.0%, 8=10.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.9%, 4=20.4%, 10=22.0%, 20=3.4%, 50=1.3%, 100=2.1%
     lat (msec): 250=3.8%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=231MiB, aggrb=14,300KiB/s, minb=0KiB/s, maxb=6,338KiB/s, mint=16541msec, maxt=16937msec
  WRITE: io=243MiB, aggrb=18,234KiB/s, minb=0KiB/s, maxb=6,876KiB/s, mint=16541msec, maxt=16937msec

Disk stats (read/write):
  cciss!c0d0: ios=4562/3512, merge=856/57713, ticks=44272/1753860, in_queue=1798620, util=97.80%
5.13user 1.96system 0:17.20elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
551480inputs+498304outputs (0major+2456minor)pagefaults 0swaps