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] [ 15043/ 74032 kb/s] [eta 00m:09s]
Threads: 3: [mmm] [30.8% done] [ 15749/ 23014 kb/s] [eta 00m:09s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18140, got signal=6
Threads: 2: [_mm] [35.7% done] [ 10957/  2167 kb/s] [eta 00m:09s]
Threads: 2: [_mF] [37.5% done] [  3941/ 11112 kb/s] [eta 00m:10s]
Threads: 2: [_FF] [100.0% done] [   679/ 45531 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: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [75.0% done] [ 25507/     0 kb/s] [eta 00m:05s]
Threads: 2: [_VV] [94.1% done] [ 55708/     0 kb/s] [eta 00m:01s]
Threads: 1: [__V] [100.0% done] [ 58819/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=18140
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=35.2%, 2=54.3%, 4=1.6%, 8=8.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=80.6%, 4=7.2%, 10=1.1%, 20=0.3%, 50=0.7%, 100=4.2%
     lat (msec): 250=5.1%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18141
  read : io=100MiB, bw=6,184KiB/s, runt= 16930msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  334, avg=36.23, stdev=53.15
    bw (KiB/s) : min=   24, max=28087, per=86.22%, avg=11156.71, stdev=9065.29
  write: io=59,316KiB, bw=4,175KiB/s, runt= 14547msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  247, avg= 1.70, stdev=14.46
    bw (KiB/s) : min=    0, max=61382, per=129.86%, avg=21364.67, stdev=34682.55
  cpu          : usr=7.61%, sys=3.73%, ctx=7175
  IO depths    : 1=5.0%, 2=45.7%, 4=28.1%, 8=21.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.5%, 4=8.8%, 10=21.6%, 20=5.9%, 50=2.3%, 100=9.9%
     lat (msec): 250=7.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18142
  read : io=100MiB, bw=6,068KiB/s, runt= 17279msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  273, avg=28.24, stdev=50.93
    bw (KiB/s) : min=    6, max=30547, per=79.20%, avg=10249.00, stdev=11889.16
  write: io=85,760KiB, bw=6,036KiB/s, runt= 14547msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  185, avg= 1.63, stdev=11.26
    bw (KiB/s) : min=    0, max=62398, per=141.98%, avg=23358.00, stdev=27410.85
  cpu          : usr=10.67%, sys=4.47%, ctx=9542
  IO depths    : 1=26.7%, 2=36.8%, 4=21.9%, 8=14.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.6%, 4=13.5%, 10=16.0%, 20=4.6%, 50=3.1%, 100=5.7%
     lat (msec): 250=5.9%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=213MiB, aggrb=12,940KiB/s, minb=0KiB/s, maxb=6,184KiB/s, mint=16930msec, maxt=17279msec
  WRITE: io=228MiB, aggrb=16,452KiB/s, minb=0KiB/s, maxb=6,036KiB/s, mint=16930msec, maxt=17279msec

Disk stats (read/write):
  cciss!c0d0: ios=4692/3579, merge=1054/54776, ticks=41304/1423076, in_queue=1465420, util=97.80%
4.71user 1.74system 0:17.60elapsed 36%CPU (0avgtext+0avgdata 0maxresident)k
566392inputs+467552outputs (0major+2454minor)pagefaults 0swaps