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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5712, got signal=6
Threads: 2: [_mm] [33.3% done] [ 15851/ 96839 kb/s] [eta 00m:06s]
Threads: 2: [_mF] [33.3% done] [  2887/  3469 kb/s] [eta 00m:08s]
Threads: 2: [_mF] [45.5% done] [  1633/ 16449 kb/s] [eta 00m:06s]
Threads: 2: [_mF] [54.5% done] [  1326/ 10742 kb/s] [eta 00m:05s]
Threads: 2: [_FF] [100.0% done] [   410/ 21944 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5714, got signal=6
Threads: 1: [_V_] [72.2% done] [  4876/     0 kb/s] [eta 00m:05s]
Threads: 1: [_V_] [100.0% done] [ 57030/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=5712
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=88.1%, 4=7.3%, 8=4.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=78.7%, 4=14.5%, 10=1.8%, 20=0.1%, 50=0.2%, 100=1.9%
     lat (msec): 250=2.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5713
  read : io=100MiB, bw=7,323KiB/s, runt= 14318msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  391, avg=28.08, stdev=64.53
    bw (KiB/s) : min=   35, max=56855, per=121.16%, avg=11568.07, stdev=18670.17
  write: io=72,072KiB, bw=5,709KiB/s, runt= 12927msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  319, avg= 3.65, stdev=23.15
    bw (KiB/s) : min=    0, max=15021, per=43.37%, avg=8442.25, stdev=6404.09
  cpu          : usr=10.73%, sys=6.12%, ctx=5154
  IO depths    : 1=3.3%, 2=55.5%, 4=25.3%, 8=15.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.9%, 4=18.5%, 10=19.8%, 20=3.9%, 50=1.5%, 100=5.5%
     lat (msec): 250=3.0%, 500=1.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5714
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=76.8%, 4=10.5%, 8=12.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=79.3%, 4=5.2%, 10=1.5%, 20=0.2%, 50=1.1%, 100=9.5%
     lat (msec): 250=2.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=130MiB, aggrb=9,548KiB/s, minb=0KiB/s, maxb=7,323KiB/s, mint=0msec, maxt=14318msec
  WRITE: io=240MiB, aggrb=19,465KiB/s, minb=0KiB/s, maxb=5,709KiB/s, mint=0msec, maxt=14318msec

Disk stats (read/write):
  cciss!c0d0: ios=1725/3498, merge=22012/57935, ticks=54028/1413340, in_queue=1467452, util=97.86%
3.83user 1.94system 0:14.64elapsed 39%CPU (0avgtext+0avgdata 0maxresident)k
327248inputs+491528outputs (0major+2471minor)pagefaults 0swaps