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=27202, got signal=6
Threads: 2: [mm_] [37.5% done] [  2973/ 89103 kb/s] [eta 00m:05s]
Threads: 2: [mm_] [57.1% done] [  2226/ 32654 kb/s] [eta 00m:03s]
Threads: 2: [mF_] [62.5% done] [  1694/ 18224 kb/s] [eta 00m:03s]
Threads: 2: [mF_] [60.0% done] [  1313/     0 kb/s] [eta 00m:04s]
Threads: 2: [FF_] [100.0% done] [   414/ 13524 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_] [82.4% done] [ 55058/     0 kb/s] [eta 00m:03s]
Threads: 2: [VV_] [100.0% done] [ 65942/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=27200
  read : io=100MiB, bw=6,593KiB/s, runt= 15902msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  407, avg=31.55, stdev=73.26
    bw (KiB/s) : min=    0, max=41629, per=86.75%, avg=11484.53, stdev=16208.26
  write: io=92,036KiB, bw=7,216KiB/s, runt= 13059msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  286, avg= 2.46, stdev=20.24
    bw (KiB/s) : min=    0, max=56019, per=80.65%, avg=17628.40, stdev=22364.82
  cpu          : usr=11.57%, sys=5.08%, ctx=10093
  IO depths    : 1=38.7%, 2=24.8%, 4=25.7%, 8=10.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.4%, 4=14.4%, 10=22.6%, 20=2.6%, 50=1.2%, 100=1.0%
     lat (msec): 250=5.1%, 500=2.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27201
  read : io=100MiB, bw=6,517KiB/s, runt= 16089msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  371, avg=28.56, stdev=63.79
    bw (KiB/s) : min=    2, max=38591, per=91.24%, avg=12078.64, stdev=13358.02
  write: io=87,524KiB, bw=6,863KiB/s, runt= 13059msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  205, avg= 1.68, stdev=13.06
    bw (KiB/s) : min=    0, max=25330, per=57.59%, avg=12588.00, stdev=12665.70
  cpu          : usr=8.50%, sys=5.07%, ctx=7742
  IO depths    : 1=18.5%, 2=42.3%, 4=27.2%, 8=11.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.6%, 4=12.8%, 10=23.1%, 20=3.3%, 50=1.1%, 100=2.4%
     lat (msec): 250=5.2%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27202
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=93.0%, 4=4.9%, 8=1.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=77.7%, 4=17.1%, 10=1.8%, 20=0.1%, 50=1.0%, 100=0.3%
     lat (msec): 250=1.7%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=203MiB, aggrb=13,238KiB/s, minb=0KiB/s, maxb=6,593KiB/s, mint=0msec, maxt=16089msec
  WRITE: io=272MiB, aggrb=21,858KiB/s, minb=0KiB/s, maxb=7,216KiB/s, mint=0msec, maxt=16089msec

Disk stats (read/write):
  cciss!c0d0: ios=3870/3704, merge=731/65820, ticks=34488/1766416, in_queue=1805616, util=97.78%
4.79user 2.12system 0:16.43elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k
479424inputs+557544outputs (0major+2456minor)pagefaults 0swaps