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] [37.5% done] [ 10593/ 22011 kb/s] [eta 00m:05s]
Threads: 3: [mmm] [36.4% done] [  7142/     0 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8037, got signal=6
Threads: 2: [m_m] [50.0% done] [  3632/ 38938 kb/s] [eta 00m:05s]
Threads: 2: [m_F] [60.0% done] [  1309/ 41875 kb/s] [eta 00m:04s]
Threads: 2: [F_F] [100.0% done] [     0/ 12816 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [82.4% done] [ 39975/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [100.0% done] [ 62932/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 62115/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=8036
  read : io=100MiB, bw=6,383KiB/s, runt= 16424msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  349, avg=30.29, stdev=65.32
    bw (KiB/s) : min=    0, max=37398, per=80.22%, avg=10705.00, stdev=14143.69
  write: io=90,148KiB, bw=6,868KiB/s, runt= 13439msec
    slat (msec): min=    0, max=    4, avg= 0.00, stdev= 0.10
    clat (msec): min=    0, max=  243, avg= 2.10, stdev=15.70
    bw (KiB/s) : min=    0, max=23748, per=51.12%, avg=10448.75, stdev=10258.43
  cpu          : usr=11.18%, sys=5.21%, ctx=7547
  IO depths    : 1=12.7%, 2=50.5%, 4=25.1%, 8=11.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.8%, 4=16.1%, 10=20.4%, 20=4.0%, 50=1.0%, 100=2.1%
     lat (msec): 250=5.6%, 500=1.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8037
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=53.1%, 2=33.9%, 4=2.8%, 8=10.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=82.4%, 4=4.0%, 10=1.2%, 20=0.2%, 50=1.4%, 100=4.1%
     lat (msec): 250=6.3%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8038
  read : io=100MiB, bw=6,425KiB/s, runt= 16314msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  347, avg=29.58, stdev=64.11
    bw (KiB/s) : min=    6, max=38715, per=101.54%, avg=13549.29, stdev=14867.59
  write: io=85,060KiB, bw=6,480KiB/s, runt= 13440msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  239, avg= 1.89, stdev=13.10
    bw (KiB/s) : min=    0, max=58318, per=98.16%, avg=20065.25, stdev=26032.63
  cpu          : usr=11.16%, sys=4.83%, ctx=7460
  IO depths    : 1=10.6%, 2=51.8%, 4=26.1%, 8=11.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=16.0%, 10=22.4%, 20=2.9%, 50=0.6%, 100=1.9%
     lat (msec): 250=5.7%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=209MiB, aggrb=13,344KiB/s, minb=0KiB/s, maxb=6,425KiB/s, mint=16314msec, maxt=16424msec
  WRITE: io=262MiB, aggrb=20,441KiB/s, minb=0KiB/s, maxb=6,868KiB/s, mint=16314msec, maxt=16424msec

Disk stats (read/write):
  cciss!c0d0: ios=4079/3839, merge=902/63208, ticks=36568/1716716, in_queue=1754268, util=98.71%
5.01user 2.06system 0:16.70elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k
500560inputs+536616outputs (0major+2462minor)pagefaults 0swaps