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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15921, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15920, got signal=6
Threads: 1
Threads: 1: [m__] [27.3% done] [   158/     0 kb/s] [eta 00m:08s]
Threads: 1: [m__] [26.7% done] [   170/     0 kb/s] [eta 00m:11s]
Threads: 1: [m__] [27.8% done] [   768/     0 kb/s] [eta 00m:13s]
Threads: 1: [m__] [27.3% done] [   377/     0 kb/s] [eta 00m:16s]
Threads: 1: [m__] [28.0% done] [   378/     0 kb/s] [eta 00m:18s]
Threads: 1: [m__] [27.6% done] [   150/     0 kb/s] [eta 00m:21s]
Threads: 1: [m__] [28.1% done] [  1000/   553 kb/s] [eta 00m:23s]
Threads: 1: [m__] [28.6% done] [    56/     0 kb/s] [eta 00m:25s]
Threads: 1: [m__] [28.9% done] [   377/     0 kb/s] [eta 00m:27s]
Threads: 1: [m__] [37.5% done] [ 12572/   203 kb/s] [eta 00m:20s]
Threads: 1: [m__] [59.1% done] [  6150/ 27101 kb/s] [eta 00m:09s]
Threads: 1: [F__] [100.0% done] [  2216/ 11563 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [76.2% done] [ 14522/     0 kb/s] [eta 00m:05s]
Threads: 1: [V__] [100.0% done] [ 50144/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=15919
  read : io=100MiB, bw=6,082KiB/s, runt= 17238msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 2725, avg=55.27, stdev=265.85
    bw (KiB/s) : min=    1, max=52441, per=97.10%, avg=6577.35, stdev=13751.79
  write: io=67,396KiB, bw=4,361KiB/s, runt= 15823msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1975, avg= 9.65, stdev=101.40
    bw (KiB/s) : min=    0, max=28323, per=38.04%, avg=6412.80, stdev=12328.62
  cpu          : usr=8.08%, sys=4.15%, ctx=6326
  IO depths    : 1=1.2%, 2=48.5%, 4=29.5%, 8=20.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=36.9%, 4=11.8%, 10=26.4%, 20=7.4%, 50=8.8%, 100=6.4%
     lat (msec): 250=0.4%, 500=0.2%, 750=0.1%, 1000=0.1%, >=2000=0.8%
fio: (groupid=0): err= 0: pid=15920
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=88.0%, 4=5.3%, 8=6.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=88.5%, 4=2.8%, 10=0.3%, 20=0.2%, 50=1.5%, 100=6.3%
     lat (msec): 250=0.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15921
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=10.5%, 2=36.6%, 4=42.5%, 8=10.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=11.3%, 4=61.2%, 10=24.3%, 20=2.0%, 50=0.9%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=111MiB, aggrb=6,774KiB/s, minb=0KiB/s, maxb=6,082KiB/s, mint=0msec, maxt=17238msec
  WRITE: io=254MiB, aggrb=16,860KiB/s, minb=0KiB/s, maxb=4,361KiB/s, mint=0msec, maxt=17238msec

Disk stats (read/write):
  cciss!c0d0: ios=2523/4834, merge=484/60238, ticks=25444/1649516, in_queue=1674972, util=92.61%
3.01user 1.31system 0:17.59elapsed 24%CPU (0avgtext+0avgdata 0maxresident)k
301208inputs+521112outputs (0major+2475minor)pagefaults 0swaps