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] [13.0% done] [ 12698/  9163 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 16990/  3904 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.0% done] [ 13609/  5438 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [  9347/  7183 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.9% done] [ 10648/  6146 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [  6194/ 10567 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [33.3% done] [  9427/  6981 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [37.0% done] [ 12861/  2806 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [  5030/  9216 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  9286/  4925 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  7496/  6345 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  9648/  3965 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [ 11995/   988 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  6369/  3969 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5080/  4592 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6687/  3160 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  6906/  1785 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24019, got signal=6
Threads: 2: [_mm] [62.5% done] [  6497/  1787 kb/s] [eta 00m:12s]
Threads: 2: [_mm] [65.6% done] [  2066/  4555 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24021, got signal=6
Threads: 1: [_V_] [68.8% done] [  3306/  2432 kb/s] [eta 00m:10s]
Threads: 1: [_V_] [82.1% done] [ 23714/     0 kb/s] [eta 00m:05s]
fio: (groupid=0): err= 0: pid=24019
  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=1.1%, 50=8.3%, 100=46.6%
     lat (msec): 250=43.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24020
  read : io=100MiB, bw=4,421KiB/s, runt= 23635msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  539, avg=71.02, stdev=58.49
    bw (KiB/s) : min=  240, max=26261, per=53.20%, avg=5381.58, stdev=5552.32
  write: io=33,236KiB, bw=1,545KiB/s, runt= 22019msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   39, max=  260, avg=106.67, stdev=25.11
    bw (KiB/s) : min=    0, max= 6168, per=47.83%, avg=2367.95, stdev=2102.84
  cpu          : usr=0.36%, sys=0.49%, ctx=8047
  IO depths    : 1=0.1%, 2=1.4%, 4=15.0%, 8=83.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.8%, 10=5.1%, 20=9.3%, 50=16.3%, 100=31.0%
     lat (msec): 250=36.1%, 500=0.5%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24021
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=9.1%, 100=49.8%
     lat (msec): 250=40.0%, 500=0.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=228MiB, aggrb=10,115KiB/s, minb=0KiB/s, maxb=4,421KiB/s, mint=0msec, maxt=23635msec
  WRITE: io=104MiB, aggrb=4,951KiB/s, minb=0KiB/s, maxb=1,545KiB/s, mint=0msec, maxt=23635msec

Disk stats (read/write):
  cciss!c0d0: ios=4571/2277, merge=730/105, ticks=49948/30748, in_queue=80692, util=99.00%
0.24user 0.58system 0:24.12elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
467432inputs+212992outputs (0major+2455minor)pagefaults 0swaps