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] [15.8% done] [ 17115/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 14002/ 68827 kb/s] [eta 00m:08s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15471, got signal=6
Threads: 2: [m_m] [50.0% done] [ 12942/ 58694 kb/s] [eta 00m:05s]
Threads: 2: [F_m] [60.0% done] [  1993/ 18592 kb/s] [eta 00m:04s]
Threads: 2: [F_F] [100.0% done] [     0/ 12178 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] [75.0% done] [ 27440/     0 kb/s] [eta 00m:05s]
Threads: 2: [V_V] [88.9% done] [ 50620/     0 kb/s] [eta 00m:02s]
Threads: 2: [V_V] [100.0% done] [ 55296/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=15470
  read : io=100MiB, bw=6,040KiB/s, runt= 17352msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  269, avg=29.76, stdev=50.24
    bw (KiB/s) : min=   10, max=34633, per=93.04%, avg=12162.38, stdev=11493.05
  write: io=73,252KiB, bw=5,160KiB/s, runt= 14535msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  119, avg= 0.96, stdev= 7.38
    bw (KiB/s) : min=    0, max=58507, per=159.92%, avg=26050.50, stdev=24170.28
  cpu          : usr=8.41%, sys=4.20%, ctx=9805
  IO depths    : 1=33.2%, 2=24.4%, 4=26.5%, 8=16.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.0%, 4=11.1%, 10=21.5%, 20=5.4%, 50=1.6%, 100=4.4%
     lat (msec): 250=7.5%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15471
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=69.2%, 2=16.0%, 4=2.1%, 8=12.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=84.5%, 4=0.2%, 10=0.4%, 20=0.6%, 50=2.0%, 100=4.3%
     lat (msec): 250=7.6%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15472
  read : io=100MiB, bw=5,996KiB/s, runt= 17484msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  342, avg=33.78, stdev=51.75
    bw (KiB/s) : min=   10, max=32114, per=80.91%, avg=10576.12, stdev=10247.30
  write: io=74,256KiB, bw=5,228KiB/s, runt= 14543msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  197, avg= 1.27, stdev=12.22
    bw (KiB/s) : min=    0, max=23984, per=57.62%, avg=9387.00, stdev=12812.73
  cpu          : usr=8.79%, sys=4.07%, ctx=8245
  IO depths    : 1=16.0%, 2=39.6%, 4=25.3%, 8=19.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.4%, 4=7.3%, 10=20.6%, 20=4.0%, 50=5.2%, 100=5.6%
     lat (msec): 250=8.4%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=218MiB, aggrb=13,072KiB/s, minb=0KiB/s, maxb=6,040KiB/s, mint=17484msec, maxt=17484msec
  WRITE: io=226MiB, aggrb=16,290KiB/s, minb=0KiB/s, maxb=5,228KiB/s, mint=17484msec, maxt=17484msec

Disk stats (read/write):
  cciss!c0d0: ios=4763/3456, merge=946/54318, ticks=41212/1391792, in_queue=1433604, util=98.49%
4.33user 1.83system 0:17.81elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k
577752inputs+462920outputs (0major+2456minor)pagefaults 0swaps