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: [mFF] [30.0% done] [  3526/148745 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [33.3% done] [  3035/     0 kb/s] [eta 00m:08s]
Threads: 3: [mFF] [41.7% done] [  1288/ 14839 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [46.2% done] [  2342/     0 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [53.8% done] [  1281/ 12052 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [66.7% done] [   728/ 16656 kb/s] [eta 00m:04s]
Threads: 3: [mFF] [64.3% done] [   968/     0 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25050, got signal=6
Threads: 2: [_FF] [100.0% done] [   549/  4624 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] [81.2% done] [ 38806/     0 kb/s] [eta 00m:03s]
Threads: 2: [_VV] [100.0% done] [ 65064/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [100.0% done] [ 64600/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=25050
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=12.9%, 2=62.3%, 4=5.9%, 8=18.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=67.0%, 4=7.2%, 10=2.4%, 20=0.8%, 50=1.3%, 100=4.8%
     lat (msec): 250=10.3%, 500=5.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25051
  read : io=100MiB, bw=6,804KiB/s, runt= 15360msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  257, avg=16.04, stdev=38.15
    bw (KiB/s) : min=   21, max=39184, per=148.72%, avg=22998.75, stdev=16476.42
  write: io=96,620KiB, bw=7,953KiB/s, runt= 12439msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  198, avg= 0.55, stdev= 7.27
    bw (KiB/s) : min=    0, max=60728, per=182.48%, avg=39330.00, stdev=34104.84
  cpu          : usr=10.62%, sys=4.22%, ctx=10595
  IO depths    : 1=47.6%, 2=20.0%, 4=24.8%, 8=7.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=56.4%, 4=12.1%, 10=22.9%, 20=1.9%, 50=1.0%, 100=1.6%
     lat (msec): 250=3.7%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25052
  read : io=100MiB, bw=6,762KiB/s, runt= 15502msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  238, avg=17.52, stdev=40.02
    bw (KiB/s) : min=    5, max=32902, per=119.58%, avg=18492.33, stdev=13577.84
  write: io=92,528KiB, bw=7,617KiB/s, runt= 12439msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.04
    clat (msec): min=    0, max=   66, avg= 0.14, stdev= 2.47
    bw (KiB/s) : min=    0, max=112730, per=261.45%, avg=56350.00, stdev=56365.01
  cpu          : usr=8.95%, sys=4.44%, ctx=14307
  IO depths    : 1=67.4%, 2=8.2%, 4=17.6%, 8=6.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=67.6%, 4=6.0%, 10=16.6%, 20=2.2%, 50=1.0%, 100=2.0%
     lat (msec): 250=4.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=229MiB, aggrb=15,464KiB/s, minb=0KiB/s, maxb=6,804KiB/s, mint=15360msec, maxt=15502msec
  WRITE: io=256MiB, aggrb=21,553KiB/s, minb=0KiB/s, maxb=7,953KiB/s, mint=15360msec, maxt=15502msec

Disk stats (read/write):
  cciss!c0d0: ios=4333/3414, merge=1072/61880, ticks=40416/1378248, in_queue=1422308, util=95.43%
4.25user 1.72system 0:15.82elapsed 37%CPU (0avgtext+0avgdata 0maxresident)k
541288inputs+523760outputs (0major+2452minor)pagefaults 0swaps