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] [12.5% done] [ 15514/  5071 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 11055/  8855 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [  6865/ 12564 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  7378/ 10583 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.4% done] [ 13730/  6087 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 14207/  3733 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13555/  2840 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 13858/  2713 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9626/  5327 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  9078/  5718 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8415/  5497 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8200/  5051 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  3079/  8204 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [ 10343/  2342 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6654/  2375 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6727/  3156 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [65.5% done] [  3286/  5531 kb/s] [eta 00m:10s]
Threads: 3: [Vmm] [66.7% done] [  6117/  1423 kb/s] [eta 00m:10s]
Threads: 3: [Vmm] [67.7% done] [ 22802/   378 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22100, got signal=6
fio: pid=22101, got signal=6
Threads: 1: [V__] [95.7% done] [ 22094/   715 kb/s] [eta 00m:01s]
fio: (groupid=0): err= 0: pid=22099
  read : io=100MiB, bw=4,671KiB/s, runt= 22381msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  255, avg=58.92, stdev=50.30
    bw (KiB/s) : min=   88, max=42426, per=54.06%, avg=6196.15, stdev=8798.78
  write: io=50,132KiB, bw=2,589KiB/s, runt= 19827msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    3, max=  184, avg=107.19, stdev=27.29
    bw (KiB/s) : min=    0, max= 8192, per=62.14%, avg=3416.39, stdev=2456.58
  cpu          : usr=0.64%, sys=0.39%, ctx=7837
  IO depths    : 1=0.1%, 2=1.7%, 4=20.9%, 8=77.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=1.6%, 10=10.6%, 20=10.6%, 50=12.2%, 100=31.6%
     lat (msec): 250=32.7%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22100
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.4%, 50=7.6%, 100=41.5%
     lat (msec): 250=48.8%, 500=0.7%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22101
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=0.5%, 50=6.9%, 100=45.9%
     lat (msec): 250=45.1%, 500=0.4%, 750=0.7%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=245MiB, aggrb=11,462KiB/s, minb=0KiB/s, maxb=4,671KiB/s, mint=0msec, maxt=22381msec
  WRITE: io=104MiB, aggrb=5,498KiB/s, minb=0KiB/s, maxb=2,589KiB/s, mint=0msec, maxt=22381msec

Disk stats (read/write):
  cciss!c0d0: ios=4665/2246, merge=752/100, ticks=51456/32264, in_queue=83708, util=98.54%
0.28user 0.71system 0:23.02elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
501128inputs+212944outputs (0major+2447minor)pagefaults 0swaps