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] [50.0% done] [ 15355/ 61102 kb/s] [eta 00m:03s]
Threads: 3: [mmm] [50.0% done] [ 13475/ 24698 kb/s] [eta 00m:04s]
Threads: 3: [mmF] [50.0% done] [  2603/  5283 kb/s] [eta 00m:05s]
Threads: 3: [mmF] [50.0% done] [   398/   264 kb/s] [eta 00m:06s]
Threads: 3: [mmF] [50.0% done] [   235/     0 kb/s] [eta 00m:07s]
Threads: 3: [mmF] [50.0% done] [   219/     0 kb/s] [eta 00m:08s]
Threads: 3: [mmF] [50.0% done] [   577/   187 kb/s] [eta 00m:09s]
Threads: 3: [mmF] [50.0% done] [   504/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21695, got signal=6
Threads: 2: [_mF] [64.7% done] [   292/ 35551 kb/s] [eta 00m:06s]
Threads: 2: [_FF] [100.0% done] [     0/  5936 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] [68.2% done] [ 10941/     0 kb/s] [eta 00m:07s]
Threads: 2: [_VV] [88.9% done] [ 59997/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [100.0% done] [ 65194/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=21695
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.3%, 2=71.8%, 4=9.2%, 8=17.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=56.2%, 4=15.7%, 10=7.6%, 20=0.6%, 50=1.7%, 100=10.2%
     lat (msec): 250=5.4%, 500=0.2%, 750=0.1%, 1000=0.7%, >=2000=0.6%
fio: (groupid=0): err= 0: pid=21696
  read : io=100MiB, bw=5,941KiB/s, runt= 17648msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 2893, avg=51.84, stdev=212.35
    bw (KiB/s) : min=   25, max=34967, per=52.17%, avg=6881.68, stdev=10912.83
  write: io=81,484KiB, bw=5,615KiB/s, runt= 14859msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1947, avg=12.16, stdev=117.09
    bw (KiB/s) : min=    0, max=14568, per=30.89%, avg=5159.00, stdev=6873.20
  cpu          : usr=7.18%, sys=4.56%, ctx=6162
  IO depths    : 1=2.9%, 2=43.8%, 4=34.0%, 8=19.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=31.2%, 4=19.2%, 10=27.4%, 20=5.4%, 50=2.8%, 100=7.8%
     lat (msec): 250=4.4%, 500=0.5%, 750=0.1%, 1000=0.2%, >=2000=0.7%
fio: (groupid=0): err= 0: pid=21697
  read : io=100MiB, bw=6,027KiB/s, runt= 17395msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  215, avg=21.42, stdev=35.25
    bw (KiB/s) : min=   10, max=42734, per=108.52%, avg=14316.08, stdev=14604.93
  write: io=81,088KiB, bw=5,595KiB/s, runt= 14839msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  119, avg= 1.40, stdev= 6.90
    bw (KiB/s) : min=    0, max=60112, per=145.75%, avg=24338.75, stdev=26067.81
  cpu          : usr=10.32%, sys=4.37%, ctx=6503
  IO depths    : 1=1.0%, 2=59.2%, 4=25.5%, 8=14.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.8%, 4=17.1%, 10=21.7%, 20=3.7%, 50=3.8%, 100=5.5%
     lat (msec): 250=4.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=222MiB, aggrb=13,192KiB/s, minb=0KiB/s, maxb=6,027KiB/s, mint=17395msec, maxt=17648msec
  WRITE: io=237MiB, aggrb=16,699KiB/s, minb=0KiB/s, maxb=5,615KiB/s, mint=17395msec, maxt=17648msec

Disk stats (read/write):
  cciss!c0d0: ios=4563/4016, merge=922/56574, ticks=47156/1568112, in_queue=1615268, util=98.12%
4.40user 2.01system 0:17.98elapsed 35%CPU (0avgtext+0avgdata 0maxresident)k
554792inputs+484664outputs (0major+2457minor)pagefaults 0swaps