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: [Fmm] [50.0% done] [ 10752/ 44706 kb/s] [eta 00m:03s]
Threads: 3: [FFm] [57.1% done] [  2615/ 35924 kb/s] [eta 00m:03s]
Threads: 3: [FFm] [55.6% done] [  1801/     0 kb/s] [eta 00m:04s]
Threads: 3: [FFm] [66.7% done] [  1056/ 12881 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4842, got signal=6
Threads: 2: [FF_] [100.0% done] [  1932/  5169 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]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4840, got signal=6
Threads: 1: [_V_] [100.0% done] [ 45543/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=4840
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=84.7%, 4=9.0%, 8=5.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=78.2%, 4=12.2%, 10=2.3%, 20=0.1%, 50=2.6%, 100=2.5%
     lat (msec): 250=1.4%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4841
  read : io=100MiB, bw=7,589KiB/s, runt= 13816msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  279, avg=14.72, stdev=39.01
    bw (KiB/s) : min=    2, max=69148, per=197.95%, avg=19966.88, stdev=29179.34
  write: io=88,464KiB, bw=7,306KiB/s, runt= 12399msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  139, avg= 1.64, stdev= 8.36
    bw (KiB/s) : min=    0, max=61710, per=157.27%, avg=33704.75, stdev=31135.67
  cpu          : usr=13.58%, sys=5.99%, ctx=5416
  IO depths    : 1=1.4%, 2=61.1%, 4=26.4%, 8=11.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.6%, 4=22.9%, 10=23.2%, 20=2.4%, 50=1.0%, 100=2.1%
     lat (msec): 250=2.5%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4842
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=70.4%, 4=10.5%, 8=18.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=74.0%, 4=1.3%, 10=0.5%, 20=0.7%, 50=4.0%, 100=8.0%
     lat (msec): 250=8.2%, 500=2.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=133MiB, aggrb=10,087KiB/s, minb=0KiB/s, maxb=7,589KiB/s, mint=0msec, maxt=13816msec
  WRITE: io=253MiB, aggrb=21,431KiB/s, minb=0KiB/s, maxb=7,306KiB/s, mint=0msec, maxt=13816msec

Disk stats (read/write):
  cciss!c0d0: ios=2741/3397, merge=600/61323, ticks=22232/1405908, in_queue=1430180, util=95.32%
3.87user 1.82system 0:14.11elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
326296inputs+519032outputs (0major+2463minor)pagefaults 0swaps