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] [ 19450/  2037 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 13723/  6800 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [  9593/  9329 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 11605/  7013 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 11682/  5802 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  7598/ 10050 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  6418/ 10250 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 10093/  5193 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 13768/  2334 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10929/  3331 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 10053/  5713 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 13862/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7927/  3332 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8879/  2318 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6200/  2946 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8985/   703 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5076/  2863 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23546, got signal=6
Threads: 2: [m_m] [64.5% done] [  4782/  2702 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23547, got signal=6
Threads: 1: [m__] [67.7% done] [  4820/  1940 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23545, got signal=6

fio: (groupid=0): err= 0: pid=23545
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.7%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.2%, 50=8.8%, 100=42.7%
     lat (msec): 250=44.6%, 500=1.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23546
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.5%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.3%, 50=7.9%, 100=48.2%
     lat (msec): 250=41.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23547
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=9.2%, 100=46.9%
     lat (msec): 250=42.6%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4004/1995, merge=562/141, ticks=47168/31972, in_queue=79136, util=99.18%
0.28user 0.36system 0:21.65elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
415384inputs+198448outputs (0major+2452minor)pagefaults 0swaps