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: [mmF] [15.8% done] [ 14673/ 44092 kb/s] [eta 00m:16s]
Threads: 3: [mmF] [26.7% done] [  7028/ 18946 kb/s] [eta 00m:11s]
Threads: 3: [mmF] [29.4% done] [  4079/ 28855 kb/s] [eta 00m:12s]
Threads: 3: [mmF] [50.0% done] [  2713/ 40020 kb/s] [eta 00m:06s]
Threads: 3: [mmF] [58.3% done] [  2725/ 21736 kb/s] [eta 00m:05s]
Threads: 3: [FmF] [66.7% done] [  1797/ 17868 kb/s] [eta 00m:04s]
Threads: 3: [FmF] [69.2% done] [   911/     0 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19010, got signal=6
Threads: 2: [F_F] [100.0% done] [  1012/     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] [68.4% done] [ 13093/     0 kb/s] [eta 00m:06s]
Threads: 2: [V_V] [93.3% done] [ 63616/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [100.0% done] [ 62940/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=19009
  read : io=100MiB, bw=6,793KiB/s, runt= 15436msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  359, avg=37.74, stdev=69.47
    bw (KiB/s) : min=   39, max=31669, per=61.43%, avg=9549.56, stdev=11564.69
  write: io=75,968KiB, bw=6,070KiB/s, runt= 12815msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  252, avg= 1.98, stdev=13.79
    bw (KiB/s) : min=    0, max=60620, per=97.35%, avg=18631.00, stdev=28279.55
  cpu          : usr=10.21%, sys=5.03%, ctx=6117
  IO depths    : 1=1.4%, 2=56.2%, 4=26.8%, 8=15.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.2%, 4=14.8%, 10=25.1%, 20=3.4%, 50=1.2%, 100=2.2%
     lat (msec): 250=8.7%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19010
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=70.1%, 2=3.2%, 4=4.5%, 8=22.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=71.3%, 4=1.2%, 10=0.2%, 20=1.0%, 50=1.7%, 100=5.0%
     lat (msec): 250=16.1%, 500=3.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19011
  read : io=100MiB, bw=6,665KiB/s, runt= 15719msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  257, avg=16.95, stdev=39.35
    bw (KiB/s) : min=    2, max=44622, per=125.46%, avg=19502.00, stdev=16860.92
  write: io=95,236KiB, bw=7,609KiB/s, runt= 12815msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  171, avg= 1.38, stdev= 6.91
    bw (KiB/s) : min=    0, max=61106, per=180.27%, avg=34502.75, stdev=30439.56
  cpu          : usr=13.13%, sys=5.85%, ctx=5960
  IO depths    : 1=1.7%, 2=62.3%, 4=27.4%, 8=8.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.9%, 4=22.1%, 10=22.6%, 20=2.1%, 50=0.4%, 100=0.8%
     lat (msec): 250=4.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=233MiB, aggrb=15,545KiB/s, minb=0KiB/s, maxb=6,793KiB/s, mint=15719msec, maxt=15719msec
  WRITE: io=234MiB, aggrb=19,139KiB/s, minb=0KiB/s, maxb=7,609KiB/s, mint=15719msec, maxt=15719msec

Disk stats (read/write):
  cciss!c0d0: ios=4716/3053, merge=1115/56723, ticks=47872/1420696, in_queue=1471112, util=97.68%
4.79user 2.12system 0:16.02elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k
583896inputs+479080outputs (0major+2450minor)pagefaults 0swaps