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=983, got signal=6
Threads: 2: [mm_] [30.0% done] [ 10764/ 80160 kb/s] [eta 00m:07s]
Threads: 2: [mm_] [50.0% done] [ 11722/ 42538 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [FF_] [100.0% done] [  6757/ 34608 kb/s] [eta 00m:00s]
fio: pid=982, got signal=6
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [88.9% done] [ 21370/     0 kb/s] [eta 00m:01s]
Threads: 1: [V__] [100.0% done] [ 34089/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=981
  read : io=100MiB, bw=10,922KiB/s, runt=  9600msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  337, avg=28.39, stdev=51.03
    bw (KiB/s) : min=   31, max=51077, per=103.62%, avg=14555.36, stdev=17630.38
  write: io=81,056KiB, bw=11,659KiB/s, runt=  7119msec
    slat (msec): min=    0, max=    2, avg= 0.00, stdev= 0.07
    clat (msec): min=    0, max=   55, avg= 0.59, stdev= 2.26
    bw (KiB/s) : min=    0, max=12817, per=17.38%, avg=6408.50, stdev=9062.99
  cpu          : usr=10.08%, sys=9.92%, ctx=6881
  IO depths    : 1=26.8%, 2=25.8%, 4=28.4%, 8=19.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.7%, 4=7.8%, 10=21.1%, 20=8.8%, 50=6.4%, 100=6.6%
     lat (msec): 250=2.7%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=982
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=6.0%, 2=56.6%, 4=21.5%, 8=16.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=65.7%, 4=11.0%, 10=4.7%, 20=1.2%, 50=2.1%, 100=8.5%
     lat (msec): 250=5.3%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=983
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=80.3%, 4=15.5%, 8=4.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=89.9%, 4=4.7%, 10=0.6%, 20=0.1%, 50=0.1%, 100=0.3%
     lat (msec): 250=2.8%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=129MiB, aggrb=14,047KiB/s, minb=0KiB/s, maxb=10,922KiB/s, mint=0msec, maxt=9600msec
  WRITE: io=250MiB, aggrb=36,869KiB/s, minb=0KiB/s, maxb=11,659KiB/s, mint=0msec, maxt=9600msec

Disk stats (read/write):
  cciss!c0d0: ios=2715/1080, merge=44/26530, ticks=26448/416776, in_queue=443220, util=89.13%
2.53user 2.11system 0:10.64elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k
329672inputs+513088outputs (0major+2443minor)pagefaults 0swaps