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] [17.6% done] [ 16542/ 28802 kb/s] [eta 00m:14s]
Threads: 3: [Fmm] [22.2% done] [ 13056/ 13178 kb/s] [eta 00m:14s]
Threads: 3: [Fmm] [25.0% done] [  5755/ 21594 kb/s] [eta 00m:15s]
Threads: 3: [FFm] [27.3% done] [  3685/ 11149 kb/s] [eta 00m:16s]
Threads: 3: [FFm] [29.2% done] [  3018/     0 kb/s] [eta 00m:17s]
Threads: 3: [FFF] [100.0% done] [    97/ 58624 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [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=3351, got signal=6
Threads: 2: [VV_] [68.4% done] [ 22779/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [93.3% done] [ 66422/     0 kb/s] [eta 00m:01s]
Threads: 2: [VV_] [100.0% done] [ 62041/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=3349
  read : io=100MiB, bw=6,698KiB/s, runt= 15654msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  343, avg=17.33, stdev=39.84
    bw (KiB/s) : min=    2, max=51342, per=94.45%, avg=15411.64, stdev=16983.71
  write: io=95,352KiB, bw=7,710KiB/s, runt= 12663msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  111, avg= 1.18, stdev= 6.09
    bw (KiB/s) : min=    0, max=60671, per=151.14%, avg=28730.80, stdev=30315.94
  cpu          : usr=13.13%, sys=6.39%, ctx=6309
  IO depths    : 1=1.7%, 2=62.7%, 4=26.5%, 8=9.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=20.0%, 10=21.7%, 20=2.6%, 50=0.9%, 100=1.5%
     lat (msec): 250=4.5%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3350
  read : io=100MiB, bw=6,788KiB/s, runt= 15442msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  359, avg=29.18, stdev=51.59
    bw (KiB/s) : min=    8, max=44392, per=80.43%, avg=13123.80, stdev=15284.17
  write: io=82,096KiB, bw=6,636KiB/s, runt= 12667msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  168, avg= 1.87, stdev=10.67
    bw (KiB/s) : min=    0, max=62431, per=121.14%, avg=23028.00, stdev=27765.51
  cpu          : usr=11.24%, sys=5.34%, ctx=6111
  IO depths    : 1=0.7%, 2=56.3%, 4=28.0%, 8=15.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.5%, 4=16.6%, 10=21.9%, 20=3.6%, 50=0.9%, 100=4.8%
     lat (msec): 250=7.1%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3351
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=71.9%, 4=4.8%, 8=22.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=64.4%, 4=8.3%, 10=0.9%, 20=0.1%, 50=0.1%, 100=11.6%
     lat (msec): 250=11.4%, 500=2.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=244MiB, aggrb=16,318KiB/s, minb=0KiB/s, maxb=6,788KiB/s, mint=0msec, maxt=15654msec
  WRITE: io=230MiB, aggrb=19,010KiB/s, minb=0KiB/s, maxb=7,710KiB/s, mint=0msec, maxt=15654msec

Disk stats (read/write):
  cciss!c0d0: ios=4806/2924, merge=1129/55820, ticks=46296/1384788, in_queue=1431084, util=97.95%
4.88user 2.41system 0:15.95elapsed 45%CPU (0avgtext+0avgdata 0maxresident)k
595472inputs+470344outputs (0major+2451minor)pagefaults 0swaps