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] [12.0% done] [  9099/ 12515 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [17.4% done] [ 15167/  8375 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.0% done] [  7325/ 10961 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [  9221/  9269 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [  9867/  8102 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 11942/  5308 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 17551/   512 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 12784/  3660 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  4148/  9936 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  9794/  4458 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [ 10929/  2591 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  9737/  2420 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  6813/  4689 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  8879/  1663 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  7179/  2285 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [58.1% done] [  6621/  1736 kb/s] [eta 00m:13s]
fio: pid=25695, got signal=6
Threads: 2: [mm_] [59.4% done] [  3489/  4864 kb/s] [eta 00m:13s]
Threads: 2: [mV_] [60.6% done] [ 13710/  1158 kb/s] [eta 00m:13s]
Threads: 2: [mV_] [60.0% done] [ 27436/     0 kb/s] [eta 00m:14s]
Threads: 1: [m__] [64.7% done] [  7716/  1793 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25693, got signal=6

fio: (groupid=0): err= 0: pid=25693
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.8%, 50=20.8%, 100=19.9%
     lat (msec): 250=55.5%, 500=1.4%, 750=0.5%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25694
  read : io=100MiB, bw=4,885KiB/s, runt= 21434msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  204, avg=57.92, stdev=43.28
    bw (KiB/s) : min=  309, max=26400, per=53.80%, avg=6070.35, stdev=6604.79
  write: io=42,172KiB, bw=2,185KiB/s, runt= 19759msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   19, max=  303, avg=99.25, stdev=42.02
    bw (KiB/s) : min=    0, max= 8224, per=50.51%, avg=2957.32, stdev=2632.40
  cpu          : usr=0.32%, sys=0.52%, ctx=7646
  IO depths    : 1=0.2%, 2=1.6%, 4=19.4%, 8=78.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=2.0%, 10=7.8%, 20=9.6%, 50=18.3%, 100=35.0%
     lat (msec): 250=26.4%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25695
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.5%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.7%, 20=1.4%, 50=7.9%, 100=53.5%
     lat (msec): 250=36.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=231MiB, aggrb=11,283KiB/s, minb=0KiB/s, maxb=4,885KiB/s, mint=0msec, maxt=21434msec
  WRITE: io=110MiB, aggrb=5,855KiB/s, minb=0KiB/s, maxb=2,185KiB/s, mint=0msec, maxt=21434msec

Disk stats (read/write):
  cciss!c0d0: ios=4604/2291, merge=637/199, ticks=47060/34860, in_queue=81916, util=99.05%
0.22user 0.57system 0:23.65elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
472368inputs+226016outputs (0major+2447minor)pagefaults 0swaps