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] [25.0% done] [ 10800/     0 kb/s] [eta 00m:09s]
Threads: 3: [mmm] [26.7% done] [  5710/ 39434 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26361, got signal=6
Threads: 2: [m_m] [45.5% done] [  3246/ 78055 kb/s] [eta 00m:06s]
Threads: 2: [F_m] [50.0% done] [  1020/ 39113 kb/s] [eta 00m:06s]
Threads: 2: [F_m] [50.0% done] [  1621/     0 kb/s] [eta 00m:07s]
Threads: 2: [F_m] [50.0% done] [  1602/     0 kb/s] [eta 00m:08s]
Threads: 2: [F_m] [50.0% done] [  1712/     0 kb/s] [eta 00m:09s]
Threads: 2: [F_m] [58.8% done] [   911/ 11088 kb/s] [eta 00m:07s]
Threads: 2: [F_m] [61.1% done] [  1061/     0 kb/s] [eta 00m:07s]
Threads: 2: [F_m] [63.2% done] [  1492/  4986 kb/s] [eta 00m:07s]
Threads: 2: [F_F] [100.0% done] [     0/  6821 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [73.7% done] [ 16851/     0 kb/s] [eta 00m:05s]
Threads: 2: [V_V] [93.8% done] [ 62692/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [100.0% done] [ 63803/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=26360
  read : io=100MiB, bw=6,373KiB/s, runt= 16452msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  483, avg=28.02, stdev=69.47
    bw (KiB/s) : min=   22, max=35685, per=88.67%, avg=12243.77, stdev=13769.55
  write: io=84,332KiB, bw=6,290KiB/s, runt= 13727msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  415, avg= 2.02, stdev=17.69
    bw (KiB/s) : min=    0, max=60041, per=171.46%, avg=31366.75, stdev=32489.52
  cpu          : usr=11.14%, sys=5.11%, ctx=6058
  IO depths    : 1=1.8%, 2=62.4%, 4=24.5%, 8=11.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.1%, 4=17.3%, 10=20.0%, 20=2.6%, 50=0.3%, 100=2.7%
     lat (msec): 250=4.2%, 500=1.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26361
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=85.5%, 4=4.0%, 8=10.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=69.3%, 4=16.8%, 10=2.1%, 20=0.3%, 50=0.4%, 100=3.4%
     lat (msec): 250=5.4%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26362
  read : io=100MiB, bw=6,369KiB/s, runt= 16461msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  396, avg=63.42, stdev=102.24
    bw (KiB/s) : min=   48, max=29532, per=43.50%, avg=6006.00, stdev=9664.42
  write: io=75,720KiB, bw=5,648KiB/s, runt= 13727msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  319, avg= 4.27, stdev=24.27
    bw (KiB/s) : min=    0, max=11404, per=29.88%, avg=5466.60, stdev=4560.75
  cpu          : usr=9.65%, sys=4.50%, ctx=5774
  IO depths    : 1=2.3%, 2=51.7%, 4=26.6%, 8=19.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=39.4%, 4=16.8%, 10=18.6%, 20=5.7%, 50=2.0%, 100=2.9%
     lat (msec): 250=8.5%, 500=6.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=217MiB, aggrb=13,808KiB/s, minb=0KiB/s, maxb=6,373KiB/s, mint=16461msec, maxt=16461msec
  WRITE: io=239MiB, aggrb=18,294KiB/s, minb=0KiB/s, maxb=6,290KiB/s, mint=16461msec, maxt=16461msec

Disk stats (read/write):
  cciss!c0d0: ios=2674/3539, merge=4337/57647, ticks=250204/1692116, in_queue=1943624, util=98.33%
4.94user 2.04system 0:16.77elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
535872inputs+490504outputs (0major+2452minor)pagefaults 0swaps