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=20822, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20821, got signal=6
Threads: 1
Threads: 1: [m__] [25.0% done] [ 14567/     0 kb/s] [eta 00m:09s]
Threads: 1: [m__] [36.4% done] [ 14671/     0 kb/s] [eta 00m:07s]
Threads: 1: [m__] [62.5% done] [  4961/ 28879 kb/s] [eta 00m:03s]
Threads: 1: [m__] [60.0% done] [  1590/     0 kb/s] [eta 00m:04s]
Threads: 1: [m__] [63.6% done] [  1187/  5165 kb/s] [eta 00m:04s]
Threads: 1: [F__] [100.0% done] [     0/  8773 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__] [76.2% done] [ 11250/     0 kb/s] [eta 00m:05s]
Threads: 1: [V__] [94.4% done] [ 26866/     0 kb/s] [eta 00m:01s]
fio: (groupid=0): err= 0: pid=20820
  read : io=100MiB, bw=6,069KiB/s, runt= 17276msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  417, avg=36.59, stdev=52.68
    bw (KiB/s) : min=    2, max=27784, per=166.15%, avg=10932.75, stdev=8692.37
  write: io=42,136KiB, bw=2,746KiB/s, runt= 15711msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  218, avg= 1.32, stdev=10.90
    bw (KiB/s) : min=    0, max=10193, per=32.83%, avg=5096.50, stdev=7207.54
  cpu          : usr=5.49%, sys=3.68%, ctx=6442
  IO depths    : 1=0.5%, 2=39.6%, 4=28.5%, 8=31.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=33.9%, 4=6.7%, 10=17.9%, 20=12.5%, 50=12.4%, 100=11.8%
     lat (msec): 250=3.3%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20821
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=51.7%, 2=38.4%, 4=6.7%, 8=3.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=95.4%, 4=0.0%, 10=0.0%, 20=0.2%, 50=0.7%, 100=2.9%
     lat (msec): 250=0.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20822
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=88.9%, 4=8.2%, 8=2.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=93.6%, 4=2.7%, 10=0.5%, 20=0.1%, 50=0.2%, 100=1.6%
     lat (msec): 250=1.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=108MiB, aggrb=6,580KiB/s, minb=0KiB/s, maxb=6,069KiB/s, mint=0msec, maxt=17276msec
  WRITE: io=233MiB, aggrb=15,526KiB/s, minb=0KiB/s, maxb=2,746KiB/s, mint=0msec, maxt=17276msec

Disk stats (read/write):
  cciss!c0d0: ios=2732/3914, merge=555/55461, ticks=18012/1583940, in_queue=1603916, util=94.68%
2.86user 1.32system 0:17.64elapsed 23%CPU (0avgtext+0avgdata 0maxresident)k
318184inputs+476568outputs (0major+2472minor)pagefaults 0swaps