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] [13.0% done] [ 13426/  6715 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 18584/  2818 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 11059/  7476 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 13849/  5173 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 16164/  3172 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [ 11454/  4937 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 16335/  1928 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 16567/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [  6780/  7748 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  9119/  5381 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [ 10575/  3441 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  9705/  2965 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  9290/  3900 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  6194/  4510 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  6178/  3294 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.0% done] [  6634/  2582 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10232, got signal=6
Threads: 2: [m_m] [59.4% done] [  1399/  4185 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10233, got signal=6
Threads: 1: [m__] [62.5% done] [  2521/  4539 kb/s] [eta 00m:12s]
Threads: 1: [m__] [65.6% done] [     0/  6447 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10231, got signal=6

fio: (groupid=0): err= 0: pid=10231
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=3.7%, 8=95.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.1%, 20=0.4%, 50=22.2%, 100=21.3%
     lat (msec): 250=54.0%, 500=0.9%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10232
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=9.5%, 100=59.6%
     lat (msec): 250=30.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10233
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=10.6%, 100=46.0%
     lat (msec): 250=41.0%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3849/2208, merge=680/85, ticks=48376/30584, in_queue=78952, util=99.13%
0.18user 0.32system 0:21.82elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
422144inputs+192160outputs (0major+2461minor)pagefaults 0swaps