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] [13.6% done] [ 15920/  6148 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 19406/  1350 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 16343/  3355 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 14717/  5859 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  7350/ 10309 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  9391/  8525 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10556/  6318 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9184/  6581 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 11665/  4791 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  8935/  4689 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11987/  2769 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  9904/  3054 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  9602/  2555 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  5969/  5286 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8025/  2245 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  1893/  7468 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [65.5% done] [  6202/  2172 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3078, got signal=6
Threads: 2: [m_m] [64.5% done] [  7187/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3077, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3079, got signal=6

fio: (groupid=0): err= 0: pid=3077
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.4%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.4%, 50=7.1%, 100=49.0%
     lat (msec): 250=42.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3078
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=6.7%, 100=49.8%
     lat (msec): 250=41.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3079
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=9.9%, 100=45.3%
     lat (msec): 250=43.1%, 500=0.6%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3630/2101, merge=648/208, ticks=45048/28320, in_queue=73352, util=98.18%
0.19user 0.56system 0:21.22elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
406656inputs+207592outputs (0major+2456minor)pagefaults 0swaps