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] [27.3% done] [ 16933/ 26768 kb/s] [eta 00m:08s]
Threads: 3: [mmF] [36.4% done] [ 10425/ 42989 kb/s] [eta 00m:07s]
Threads: 3: [mmF] [50.0% done] [  3380/ 38290 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1212, got signal=6
Threads: 2: [_mF] [66.7% done] [  2717/ 35216 kb/s] [eta 00m:03s]
Threads: 2: [_FF] [100.0% done] [     0/  8732 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: [_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: [_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] [82.4% done] [ 49477/     0 kb/s] [eta 00m:03s]
Threads: 2: [_VV] [100.0% done] [ 64238/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=1212
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=51.8%, 2=31.6%, 4=2.7%, 8=13.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=82.2%, 4=0.7%, 10=0.2%, 20=0.3%, 50=1.2%, 100=6.4%
     lat (msec): 250=8.4%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1213
  read : io=100MiB, bw=6,699KiB/s, runt= 15652msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  271, avg=32.97, stdev=52.78
    bw (KiB/s) : min=   24, max=33399, per=76.81%, avg=11304.25, stdev=12250.23
  write: io=73,904KiB, bw=5,724KiB/s, runt= 13219msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  147, avg= 1.52, stdev=10.24
    bw (KiB/s) : min=    0, max=59072, per=104.22%, avg=19760.75, stdev=27834.76
  cpu          : usr=9.35%, sys=4.32%, ctx=7153
  IO depths    : 1=9.0%, 2=46.5%, 4=27.1%, 8=17.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.8%, 4=10.3%, 10=22.7%, 20=4.8%, 50=1.4%, 100=5.0%
     lat (msec): 250=8.7%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1214
  read : io=100MiB, bw=6,547KiB/s, runt= 16014msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  244, avg=18.15, stdev=38.88
    bw (KiB/s) : min=   12, max=53207, per=109.42%, avg=16103.17, stdev=18079.50
  write: io=93,888KiB, bw=7,272KiB/s, runt= 13219msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  161, avg= 1.17, stdev= 8.81
    bw (KiB/s) : min=    0, max=25972, per=96.87%, avg=18367.25, stdev=12327.48
  cpu          : usr=11.99%, sys=4.67%, ctx=8563
  IO depths    : 1=27.3%, 2=37.2%, 4=25.4%, 8=10.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.5%, 4=17.3%, 10=20.8%, 20=2.6%, 50=0.4%, 100=3.0%
     lat (msec): 250=4.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=225MiB, aggrb=14,717KiB/s, minb=0KiB/s, maxb=6,699KiB/s, mint=15652msec, maxt=16014msec
  WRITE: io=239MiB, aggrb=18,960KiB/s, minb=0KiB/s, maxb=7,272KiB/s, mint=15652msec, maxt=16014msec

Disk stats (read/write):
  cciss!c0d0: ios=4566/3375, merge=1097/57708, ticks=38148/1412864, in_queue=1454368, util=97.23%
4.57user 2.02system 0:16.36elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
563792inputs+489680outputs (0major+2453minor)pagefaults 0swaps