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] [  7936/ 12080 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 13909/  7078 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  4994/ 15360 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  9553/ 10617 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  9977/  9013 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 12023/  6716 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 14063/  3681 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  6656/  9646 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 11463/  4291 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  6647/  7261 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  5263/  9086 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8699/  4209 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6603/  3689 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  4514/  6022 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6802/  3632 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7643/  1093 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5209/  1458 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4904, got signal=6
Threads: 2: [m_m] [64.5% done] [  6741/  1206 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4905, got signal=6
Threads: 1: [m__] [67.7% done] [  6582/   491 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4903, got signal=6

fio: (groupid=0): err= 0: pid=4903
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.3%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.2%, 20=2.4%, 50=9.5%, 100=41.4%
     lat (msec): 250=44.4%, 500=1.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4904
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.5%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=9.6%, 100=50.6%
     lat (msec): 250=38.6%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4905
  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=0.1%, 20=2.1%, 50=10.2%, 100=44.6%
     lat (msec): 250=41.5%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3276/2575, merge=399/106, ticks=36452/42936, in_queue=79372, util=98.10%
0.22user 0.47system 0:21.64elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
331024inputs+283200outputs (0major+2456minor)pagefaults 0swaps