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] [ 22698/  1259 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 19317/  2060 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 15437/  3957 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 20057/     0 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12987/  4889 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 11650/  6712 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  8602/  6912 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 12556/  4522 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  9841/  6810 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  9520/  5201 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  5981/  7623 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7321/  3949 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8907/  2803 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  7793/  2928 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7704/  2108 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6631/  1824 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8146, got signal=6
Threads: 2: [m_m] [63.3% done] [  2208/  4685 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [64.5% done] [  2625/  3868 kb/s] [eta 00m:11s]
fio: pid=8145, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8147, got signal=6

fio: (groupid=0): err= 0: pid=8145
  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=11.9%, 100=46.0%
     lat (msec): 250=40.8%, 500=0.2%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8146
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=10.5%, 100=50.6%
     lat (msec): 250=37.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8147
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.6%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=11.6%, 100=41.6%
     lat (msec): 250=45.0%, 500=0.8%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3813/2061, merge=463/102, ticks=48932/25264, in_queue=74192, util=97.61%
0.36user 0.68system 0:21.66elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
435872inputs+178112outputs (0major+2447minor)pagefaults 0swaps