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] [11.5% done] [ 10437/  7577 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [16.0% done] [ 16973/  2428 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [  7838/ 11869 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [ 13414/  4401 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 13683/  4140 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [ 15559/  1519 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 11613/  4412 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 16270/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 11124/  3518 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  2941/ 11710 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  7663/  7642 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [ 11930/  2371 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  8753/  3465 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [ 12316/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7512/  1928 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  2493/  7663 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5995/  2643 kb/s] [eta 00m:11s]
Threads: 3: [Vmm] [64.5% done] [  8232/  2364 kb/s] [eta 00m:11s]
Threads: 3: [Vmm] [63.6% done] [ 10595/  2094 kb/s] [eta 00m:12s]
Threads: 2: [_mm] [64.7% done] [  8411/  2318 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26582, got signal=6
Threads: 1: [__m] [67.6% done] [     0/  5442 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26583, got signal=6

fio: (groupid=0): err= 0: pid=26581
  read : io=100MiB, bw=4,788KiB/s, runt= 21789msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    1, max=  257, avg=86.86, stdev=49.14
    bw (KiB/s) : min=   21, max=16123, per=49.14%, avg=5229.92, stdev=2710.94
  write: io=21,156KiB, bw=1,084KiB/s, runt= 19975msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   47, max=  185, avg=102.46, stdev=28.22
    bw (KiB/s) : min=    0, max= 6000, per=44.74%, avg=2321.27, stdev=2272.07
  cpu          : usr=0.28%, sys=0.22%, ctx=7283
  IO depths    : 1=0.2%, 2=0.5%, 4=11.4%, 8=88.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.4%, 10=1.8%, 20=4.2%, 50=14.6%, 100=40.0%
     lat (msec): 250=38.5%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26582
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.1%, 8=95.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=9.0%, 100=41.0%
     lat (msec): 250=46.7%, 500=2.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26583
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=11.1%, 100=41.3%
     lat (msec): 250=45.0%, 500=1.1%, 750=0.5%, 1000=0.2%, >=2000=0.2%

Run status group 0 (all jobs):
   READ: io=221MiB, aggrb=10,642KiB/s, minb=0KiB/s, maxb=4,788KiB/s, mint=0msec, maxt=21789msec
  WRITE: io=99MiB, aggrb=5,188KiB/s, minb=0KiB/s, maxb=1,084KiB/s, mint=0msec, maxt=21789msec

Disk stats (read/write):
  cciss!c0d0: ios=4135/2322, merge=894/59, ticks=52512/41624, in_queue=94132, util=99.19%
0.25user 0.32system 0:23.52elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
452928inputs+202464outputs (0major+2450minor)pagefaults 0swaps