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] [14.3% done] [ 17315/  5910 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 12141/  8728 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 13512/  5723 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 15326/  4201 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 14104/  5278 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 14122/  2452 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 15497/  2208 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 14435/  1126 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 11783/  3892 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  8086/  6150 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11272/  3214 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  6133/  5674 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [ 11189/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6207/  4311 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5385/  4018 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6036/  2953 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32458, got signal=6
Threads: 2: [m_m] [63.3% done] [  7626/   545 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32459, got signal=6
Threads: 1: [m__] [66.7% done] [  2607/  4067 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32457, got signal=6

fio: (groupid=0): err= 0: pid=32457
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.0%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=2.2%, 50=15.3%, 100=35.9%
     lat (msec): 250=44.5%, 500=0.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32458
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.8%, 50=11.0%, 100=47.3%
     lat (msec): 250=39.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32459
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.5%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.3%, 20=1.4%, 50=10.2%, 100=43.6%
     lat (msec): 250=43.2%, 500=0.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3948/1686, merge=687/193, ticks=46932/24244, in_queue=71168, util=99.01%
0.21user 0.33system 0:20.84elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
452632inputs+161656outputs (0major+2452minor)pagefaults 0swaps