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] [23.1% done] [  5026/ 62142 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [40.0% done] [ 11353/ 43365 kb/s] [eta 00m:06s]
Threads: 3: [mmm] [41.7% done] [  4136/ 23380 kb/s] [eta 00m:07s]
Threads: 3: [mmF] [42.9% done] [  3103/ 10327 kb/s] [eta 00m:08s]
Threads: 3: [mmF] [53.8% done] [  3039/ 17168 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [61.5% done] [  1443/ 18783 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15181, got signal=6
Threads: 2: [F_F] [100.0% done] [     0/  9107 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] [68.2% done] [ 18637/     0 kb/s] [eta 00m:07s]
Threads: 2: [V_V] [84.2% done] [ 61265/     0 kb/s] [eta 00m:03s]
Threads: 2: [m_V] [100.0% done] [ 63229/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=15180
  read : io=100MiB, bw=6,122KiB/s, runt= 17127msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  419, avg=35.25, stdev=73.00
    bw (KiB/s) : min=   11, max=58184, per=77.24%, avg=10084.56, stdev=16234.21
  write: io=85,524KiB, bw=5,951KiB/s, runt= 14715msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  264, avg= 2.06, stdev=16.09
    bw (KiB/s) : min=    0, max=57155, per=109.19%, avg=19599.80, stdev=22427.39
  cpu          : usr=9.93%, sys=4.93%, ctx=10496
  IO depths    : 1=44.6%, 2=15.1%, 4=26.6%, 8=13.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.2%, 4=9.8%, 10=20.8%, 20=5.1%, 50=2.3%, 100=1.2%
     lat (msec): 250=6.7%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15181
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=16.3%, 2=65.5%, 4=4.0%, 8=14.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=72.2%, 4=8.1%, 10=2.2%, 20=0.5%, 50=0.8%, 100=2.0%
     lat (msec): 250=9.0%, 500=4.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15182
  read : io=100MiB, bw=5,933KiB/s, runt= 17671msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  635, avg=27.52, stdev=70.49
    bw (KiB/s) : min=    5, max=58747, per=99.41%, avg=12978.50, stdev=18946.61
  write: io=90,868KiB, bw=6,317KiB/s, runt= 14728msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  298, avg= 1.83, stdev=16.24
    bw (KiB/s) : min=    0, max=61317, per=140.64%, avg=25245.60, stdev=31954.87
  cpu          : usr=10.46%, sys=4.37%, ctx=8532
  IO depths    : 1=21.8%, 2=39.1%, 4=26.9%, 8=12.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.0%, 4=14.6%, 10=22.4%, 20=4.0%, 50=2.6%, 100=1.8%
     lat (msec): 250=3.8%, 500=1.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=220MiB, aggrb=13,056KiB/s, minb=0KiB/s, maxb=6,122KiB/s, mint=17671msec, maxt=17671msec
  WRITE: io=252MiB, aggrb=17,951KiB/s, minb=0KiB/s, maxb=6,317KiB/s, mint=17671msec, maxt=17671msec

Disk stats (read/write):
  cciss!c0d0: ios=4379/4114, merge=962/60355, ticks=43844/1822344, in_queue=1868708, util=97.91%
4.93user 2.12system 0:18.02elapsed 39%CPU (0avgtext+0avgdata 0maxresident)k
525912inputs+516576outputs (0major+2459minor)pagefaults 0swaps