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: [FFm] [60.0% done] [  1008/121379 kb/s] [eta 00m:02s]
Threads: 3: [FFm] [57.1% done] [    85/     0 kb/s] [eta 00m:03s]
Threads: 3: [FFm] [55.6% done] [   423/    56 kb/s] [eta 00m:04s]
Threads: 3: [FFm] [54.5% done] [   276/     0 kb/s] [eta 00m:05s]
Threads: 3: [FFm] [53.8% done] [   117/     0 kb/s] [eta 00m:06s]
Threads: 3: [FFm] [57.1% done] [   251/   288 kb/s] [eta 00m:06s]
Threads: 3: [FFm] [56.2% done] [    52/     0 kb/s] [eta 00m:07s]
Threads: 3: [FFm] [55.6% done] [   138/     0 kb/s] [eta 00m:08s]
Threads: 3: [VVm] [57.9% done] [ 18913/     0 kb/s] [eta 00m:08s]
Threads: 3: [VVm] [57.1% done] [ 30484/     0 kb/s] [eta 00m:09s]
Threads: 3: [VVm] [56.5% done] [ 26085/   199 kb/s] [eta 00m:10s]
Threads: 3: [VVm] [56.0% done] [ 30805/     0 kb/s] [eta 00m:11s]
Threads: 3: [VVm] [57.7% done] [ 26890/   288 kb/s] [eta 00m:11s]
Threads: 3: [VVm] [57.1% done] [ 27431/     0 kb/s] [eta 00m:12s]
Threads: 2: [EVm] [58.6% done] [ 28338/   138 kb/s] [eta 00m:12s]
Threads: 1: [__F] [100.0% done] [  9394/  9524 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32606, got signal=6

fio: (groupid=0): err= 0: pid=32604
  read : io=100MiB, bw=6,133KiB/s, runt= 17056msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  456, avg=32.69, stdev=55.77
    bw (KiB/s) : min=    0, max=27088, per=94.90%, avg=12374.53, stdev=6703.48
  write: io=94,980KiB, bw=9,306KiB/s, runt= 10451msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  111, avg= 0.42, stdev= 4.85
    bw (KiB/s) : min=    0, max=60702, per=146.34%, avg=39348.67, stdev=34118.28
  cpu          : usr=8.23%, sys=4.46%, ctx=11523
  IO depths    : 1=48.8%, 2=11.1%, 4=27.7%, 8=12.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.6%, 4=5.5%, 10=10.0%, 20=14.1%, 50=9.6%, 100=1.3%
     lat (msec): 250=5.9%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32605
  read : io=100MiB, bw=6,037KiB/s, runt= 17367msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  373, avg=37.02, stdev=59.72
    bw (KiB/s) : min=   13, max=20598, per=85.71%, avg=11176.75, stdev=5635.02
  write: io=93,676KiB, bw=9,185KiB/s, runt= 10443msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  130, avg= 1.13, stdev= 5.95
    bw (KiB/s) : min=    0, max=60915, per=135.12%, avg=36330.25, stdev=29791.59
  cpu          : usr=10.00%, sys=4.65%, ctx=6532
  IO depths    : 1=2.9%, 2=53.0%, 4=29.3%, 8=14.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.1%, 4=10.7%, 10=11.8%, 20=12.2%, 50=13.6%, 100=1.8%
     lat (msec): 250=5.6%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32606
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=75.6%, 4=7.8%, 8=16.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=58.9%, 4=15.6%, 10=2.6%, 20=1.3%, 50=8.6%, 100=4.2%
     lat (msec): 250=1.0%, 500=1.5%, 750=1.5%, 1000=0.6%, >=2000=3.2%

Run status group 0 (all jobs):
   READ: io=216MiB, aggrb=13,040KiB/s, minb=0KiB/s, maxb=6,133KiB/s, mint=0msec, maxt=17367msec
  WRITE: io=268MiB, aggrb=26,888KiB/s, minb=0KiB/s, maxb=9,306KiB/s, mint=0msec, maxt=17367msec

Disk stats (read/write):
  cciss!c0d0: ios=4026/3395, merge=767/65196, ticks=70088/1286440, in_queue=1356556, util=94.63%
4.70user 2.17system 0:19.56elapsed 35%CPU (0avgtext+0avgdata 0maxresident)k
494176inputs+548896outputs (0major+2467minor)pagefaults 0swaps