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] [27.3% done] [ 16997/ 26953 kb/s] [eta 00m:08s]
Threads: 3: [mmF] [44.4% done] [  5988/ 57761 kb/s] [eta 00m:05s]
Threads: 3: [mmF] [45.5% done] [  4429/ 22843 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4393, got signal=6
Threads: 2: [_mF] [46.2% done] [  2287/ 12369 kb/s] [eta 00m:07s]
Threads: 2: [_mF] [58.3% done] [  1065/ 18320 kb/s] [eta 00m:05s]
Threads: 2: [_mF] [66.7% done] [  1422/  6761 kb/s] [eta 00m:04s]
Threads: 2: [_FF] [100.0% done] [     0/  4917 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] [68.4% done] [  5869/     0 kb/s] [eta 00m:06s]
Threads: 2: [_VV] [87.5% done] [ 62981/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [100.0% done] [ 59532/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=4393
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=4.8%, 2=55.5%, 4=21.7%, 8=18.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=42.8%, 4=11.8%, 10=24.0%, 20=5.7%, 50=1.4%, 100=4.9%
     lat (msec): 250=9.0%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4394
  read : io=100MiB, bw=6,885KiB/s, runt= 15212msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  370, avg=40.60, stdev=66.81
    bw (KiB/s) : min=    3, max=46744, per=65.11%, avg=9611.55, stdev=12904.10
  write: io=71,452KiB, bw=5,670KiB/s, runt= 12903msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  279, avg= 4.50, stdev=19.37
    bw (KiB/s) : min=    0, max=11309, per=32.36%, avg=6323.25, stdev=4769.50
  cpu          : usr=8.97%, sys=4.76%, ctx=5794
  IO depths    : 1=1.5%, 2=48.1%, 4=31.0%, 8=19.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=38.5%, 4=12.0%, 10=22.9%, 20=7.2%, 50=3.8%, 100=4.5%
     lat (msec): 250=9.3%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4395
  read : io=100MiB, bw=6,632KiB/s, runt= 15810msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  218, avg=17.45, stdev=39.85
    bw (KiB/s) : min=    0, max=56303, per=117.90%, avg=17403.90, stdev=18846.68
  write: io=95,668KiB, bw=7,599KiB/s, runt= 12891msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  102, avg= 0.98, stdev= 4.46
    bw (KiB/s) : min=    0, max=59564, per=170.09%, avg=33237.50, stdev=30805.45
  cpu          : usr=13.36%, sys=5.67%, ctx=5974
  IO depths    : 1=2.0%, 2=63.9%, 4=25.1%, 8=9.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.6%, 4=20.9%, 10=20.5%, 20=2.4%, 50=0.5%, 100=1.4%
     lat (msec): 250=4.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=223MiB, aggrb=14,762KiB/s, minb=0KiB/s, maxb=6,885KiB/s, mint=15212msec, maxt=15810msec
  WRITE: io=240MiB, aggrb=19,541KiB/s, minb=0KiB/s, maxb=7,599KiB/s, mint=15212msec, maxt=15810msec

Disk stats (read/write):
  cciss!c0d0: ios=4474/3414, merge=1142/58141, ticks=38180/1336256, in_queue=1374440, util=96.77%
4.70user 2.01system 0:16.14elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
555344inputs+492600outputs (0major+2450minor)pagefaults 0swaps