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] [ 18740/ 50346 kb/s] [eta 00m:09s]
Threads: 3: [Fmm] [44.4% done] [ 13504/ 91222 kb/s] [eta 00m:05s]
Threads: 3: [Fmm] [55.6% done] [  2523/ 42630 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18201, got signal=6
Threads: 2: [F_F] [100.0% done] [  1653/ 25132 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: [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: [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: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [77.8% done] [ 43734/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [100.0% done] [ 61867/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [100.0% done] [ 59540/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=18200
  read : io=100MiB, bw=6,476KiB/s, runt= 16190msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  252, avg=20.64, stdev=44.90
    bw (KiB/s) : min=    8, max=49509, per=111.47%, avg=16370.00, stdev=16864.35
  write: io=88,588KiB, bw=6,825KiB/s, runt= 13291msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  220, avg= 0.92, stdev= 9.71
    bw (KiB/s) : min=    0, max=60167, per=183.91%, avg=34055.00, stdev=29859.93
  cpu          : usr=10.85%, sys=5.19%, ctx=10552
  IO depths    : 1=40.7%, 2=23.5%, 4=25.4%, 8=10.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=53.7%, 4=12.1%, 10=22.6%, 20=3.8%, 50=0.8%, 100=1.2%
     lat (msec): 250=5.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18201
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=77.1%, 2=3.1%, 4=4.0%, 8=15.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=79.2%, 4=0.9%, 10=0.2%, 20=0.9%, 50=3.7%, 100=5.3%
     lat (msec): 250=9.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18202
  read : io=100MiB, bw=6,676KiB/s, runt= 15702msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  254, avg=27.44, stdev=48.99
    bw (KiB/s) : min=    0, max=43179, per=88.24%, avg=12959.64, stdev=13809.52
  write: io=76,824KiB, bw=5,918KiB/s, runt= 13291msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  206, avg= 2.70, stdev=18.00
    bw (KiB/s) : min=    0, max=40204, per=83.28%, avg=15420.75, stdev=17516.24
  cpu          : usr=10.06%, sys=5.38%, ctx=7536
  IO depths    : 1=14.3%, 2=43.8%, 4=26.6%, 8=15.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.8%, 4=12.5%, 10=21.5%, 20=4.4%, 50=2.2%, 100=4.2%
     lat (msec): 250=7.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=227MiB, aggrb=14,686KiB/s, minb=0KiB/s, maxb=6,676KiB/s, mint=15702msec, maxt=16190msec
  WRITE: io=235MiB, aggrb=18,517KiB/s, minb=0KiB/s, maxb=6,825KiB/s, mint=15702msec, maxt=16190msec

Disk stats (read/write):
  cciss!c0d0: ios=4741/3239, merge=1092/56789, ticks=41448/1357876, in_queue=1399324, util=96.94%
4.60user 2.14system 0:16.51elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
586272inputs+480736outputs (0major+2452minor)pagefaults 0swaps