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] [50.0% done] [ 12686/ 74300 kb/s] [eta 00m:03s]
Threads: 3: [mmm] [57.1% done] [ 10778/   793 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12169, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12170, got signal=6
Threads: 1: [m__] [62.5% done] [ 10095/  6487 kb/s] [eta 00m:03s]
Threads: 1: [F__] [100.0% done] [  2961/  9941 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [80.0% done] [ 19853/     0 kb/s] [eta 00m:04s]
fio: (groupid=0): err= 0: pid=12168
  read : io=100MiB, bw=6,123KiB/s, runt= 17111msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  411, avg=28.49, stdev=44.99
    bw (KiB/s) : min=    4, max=47840, per=159.72%, avg=12262.08, stdev=15391.20
  write: io=67,988KiB, bw=4,448KiB/s, runt= 15651msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  179, avg= 3.84, stdev=11.98
    bw (KiB/s) : min=    0, max=88432, per=191.59%, avg=30927.00, stdev=49848.24
  cpu          : usr=6.03%, sys=4.30%, ctx=5938
  IO depths    : 1=2.5%, 2=35.2%, 4=36.6%, 8=25.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=26.5%, 4=9.2%, 10=28.5%, 20=13.4%, 50=10.0%, 100=8.4%
     lat (msec): 250=3.3%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12169
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=80.7%, 4=5.4%, 8=13.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=65.3%, 4=17.5%, 10=1.8%, 20=0.4%, 50=1.4%, 100=10.4%
     lat (msec): 250=2.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12170
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.5%, 2=68.5%, 4=12.6%, 8=17.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.4%, 4=17.9%, 10=9.0%, 20=2.1%, 50=2.7%, 100=11.6%
     lat (msec): 250=4.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=125MiB, aggrb=7,677KiB/s, minb=0KiB/s, maxb=6,123KiB/s, mint=0msec, maxt=17111msec
  WRITE: io=241MiB, aggrb=16,142KiB/s, minb=0KiB/s, maxb=4,448KiB/s, mint=0msec, maxt=17111msec

Disk stats (read/write):
  cciss!c0d0: ios=2909/3806, merge=588/57837, ticks=19256/1531004, in_queue=1550256, util=96.55%
3.98user 1.57system 0:17.42elapsed 31%CPU (0avgtext+0avgdata 0maxresident)k
321112inputs+493656outputs (0major+2464minor)pagefaults 0swaps