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] [9.7% done] [ 14266/  6749 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [14.3% done] [ 11987/  9646 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [18.5% done] [ 11441/  9001 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [23.1% done] [ 19601/  2794 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [26.9% done] [ 15293/  2875 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [ 11429/  6516 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [36.0% done] [ 15067/  2332 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [ 13817/   964 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 11690/  4714 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  6375/  7651 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [ 11466/  2229 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  6241/  6343 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  1822/  9656 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  3131/  6926 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  7467/  3583 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  4478/  5068 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  5566/  2381 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32688, got signal=6
Threads: 2: [m_m] [62.5% done] [  5723/  1590 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32689, got signal=6
Threads: 1: [m__] [65.6% done] [  3420/  3839 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32687, got signal=6

fio: (groupid=0): err= 0: pid=32687
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=2.4%, 50=13.3%, 100=37.6%
     lat (msec): 250=44.4%, 500=0.7%, 750=0.4%, 1000=0.3%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=32688
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.0%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.2%, 50=7.7%, 100=47.0%
     lat (msec): 250=42.3%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32689
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=8.0%, 100=43.3%
     lat (msec): 250=45.4%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3587/2544, merge=519/1160, ticks=44848/129112, in_queue=164648, util=99.85%
0.17user 0.43system 0:21.93elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
399856inputs+214136outputs (0major+2462minor)pagefaults 0swaps