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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21952, got signal=6
Threads: 2
Threads: 2: [mF_] [42.9% done] [  2035/     0 kb/s] [eta 00m:04s]
Threads: 2: [mF_] [50.0% done] [  1397/ 10918 kb/s] [eta 00m:04s]
Threads: 2: [FF_] [100.0% done] [     0/ 29465 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]
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: [VV_] [86.7% done] [ 55933/     0 kb/s] [eta 00m:02s]
Threads: 2: [VV_] [100.0% done] [ 65759/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=21950
  read : io=100MiB, bw=7,052KiB/s, runt= 14868msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  335, avg=25.91, stdev=53.14
    bw (KiB/s) : min=   10, max=36530, per=108.58%, avg=15031.38, stdev=14252.45
  write: io=81,816KiB, bw=6,883KiB/s, runt= 12171msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  279, avg= 1.30, stdev=12.20
    bw (KiB/s) : min=    0, max=57810, per=99.79%, avg=23659.67, stdev=30299.17
  cpu          : usr=8.91%, sys=5.43%, ctx=8671
  IO depths    : 1=29.8%, 2=27.1%, 4=28.5%, 8=14.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.3%, 4=12.2%, 10=24.1%, 20=3.2%, 50=3.4%, 100=3.1%
     lat (msec): 250=4.5%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21951
  read : io=100MiB, bw=6,921KiB/s, runt= 15149msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  232, avg=13.08, stdev=31.14
    bw (KiB/s) : min=   12, max=40496, per=182.10%, avg=25208.71, stdev=15426.85
  write: io=97,648KiB, bw=8,215KiB/s, runt= 12171msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   85, avg= 0.34, stdev= 3.78
    bw (KiB/s) : min=    0, max=60268, per=165.24%, avg=39176.67, stdev=33961.26
  cpu          : usr=10.91%, sys=5.10%, ctx=10661
  IO depths    : 1=47.8%, 2=20.6%, 4=24.4%, 8=7.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=56.4%, 4=16.2%, 10=20.3%, 20=2.1%, 50=0.4%, 100=1.0%
     lat (msec): 250=3.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21952
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=87.7%, 4=11.9%, 8=0.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=85.6%, 4=11.5%, 10=2.4%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=200MiB, aggrb=13,843KiB/s, minb=0KiB/s, maxb=7,052KiB/s, mint=0msec, maxt=15149msec
  WRITE: io=275MiB, aggrb=23,709KiB/s, minb=0KiB/s, maxb=8,215KiB/s, mint=0msec, maxt=15149msec

Disk stats (read/write):
  cciss!c0d0: ios=3761/3581, merge=964/66738, ticks=24036/1513444, in_queue=1539132, util=94.55%
4.21user 2.07system 0:15.44elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
472848inputs+563712outputs (0major+2455minor)pagefaults 0swaps