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] [12.5% done] [  7240/ 11905 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [  9757/ 11079 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.0% done] [ 10726/  8265 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [25.0% done] [ 15197/  5432 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 16550/  2700 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 13711/  2424 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  7383/  7960 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  2505/ 11466 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  2936/ 10844 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  9469/  5995 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  7236/  6280 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  5271/  6780 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  6337/  5434 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  8659/  1883 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  6516/  4002 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  4901/  3953 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25748, got signal=6
Threads: 2: [m_m] [61.3% done] [  6666/  1212 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [62.5% done] [  7362/  1004 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25749, got signal=6
Threads: 1: [m__] [67.7% done] [  8322/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25747, got signal=6

fio: (groupid=0): err= 0: pid=25747
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=8.3%, 8=91.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.1%, 20=4.3%, 50=12.1%, 100=37.9%
     lat (msec): 250=43.3%, 500=1.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25748
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=7.6%, 100=44.9%
     lat (msec): 250=45.4%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25749
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.4%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.2%, 20=3.4%, 50=10.3%, 100=45.3%
     lat (msec): 250=39.4%, 500=0.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3621/2604, merge=555/268, ticks=42172/42512, in_queue=84688, util=98.96%
0.20user 0.36system 0:21.66elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
363408inputs+250928outputs (0major+2461minor)pagefaults 0swaps