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: [FFm] [60.0% done] [  4929/ 44144 kb/s] [eta 00m:02s]
Threads: 3: [FFm] [57.1% done] [   983/     0 kb/s] [eta 00m:03s]
Threads: 3: [FFm] [62.5% done] [   999/ 13982 kb/s] [eta 00m:03s]
Threads: 3: [FFF] [100.0% done] [   170/  8683 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20445, got signal=6
Threads: 2: [V_V] [75.0% done] [ 33117/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [100.0% done] [ 72106/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 68136/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=20444
  read : io=100MiB, bw=7,469KiB/s, runt= 14037msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  125, avg=12.71, stdev=24.61
    bw (KiB/s) : min=    1, max=43649, per=138.71%, avg=21829.50, stdev=20301.40
  write: io=96,092KiB, bw=8,514KiB/s, runt= 11556msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   38, avg= 0.64, stdev= 1.72
    bw (KiB/s) : min=    0, max=60121, per=131.32%, avg=31519.00, stdev=30166.46
  cpu          : usr=12.05%, sys=5.50%, ctx=6339
  IO depths    : 1=16.2%, 2=47.2%, 4=26.6%, 8=10.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=21.2%, 10=20.1%, 20=2.2%, 50=3.3%, 100=3.3%
     lat (msec): 250=1.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20445
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=71.4%, 4=18.5%, 8=9.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=84.1%, 4=4.6%, 10=0.8%, 20=0.3%, 50=0.6%, 100=8.0%
     lat (msec): 250=1.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20446
  read : io=100MiB, bw=7,307KiB/s, runt= 14348msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  411, avg=28.00, stdev=61.31
    bw (KiB/s) : min=   35, max=36765, per=73.48%, avg=11565.06, stdev=14249.65
  write: io=88,220KiB, bw=7,814KiB/s, runt= 11560msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  265, avg= 2.00, stdev=14.20
    bw (KiB/s) : min=    0, max=58359, per=71.05%, avg=17053.20, stdev=24050.32
  cpu          : usr=11.43%, sys=5.52%, ctx=5514
  IO depths    : 1=4.2%, 2=56.6%, 4=26.2%, 8=13.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.8%, 4=18.4%, 10=16.7%, 20=2.6%, 50=1.7%, 100=3.9%
     lat (msec): 250=4.5%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=215MiB, aggrb=15,738KiB/s, minb=0KiB/s, maxb=7,469KiB/s, mint=14348msec, maxt=14348msec
  WRITE: io=265MiB, aggrb=24,001KiB/s, minb=0KiB/s, maxb=8,514KiB/s, mint=14348msec, maxt=14348msec

Disk stats (read/write):
  cciss!c0d0: ios=1832/3248, merge=3699/64476, ticks=167260/1350260, in_queue=1517520, util=96.72%
4.06user 2.24system 0:14.69elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k
483168inputs+541968outputs (0major+2443minor)pagefaults 0swaps