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] [ 10776/ 10971 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 14401/  5977 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 17974/  3347 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  7838/  9914 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12759/  7891 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  8940/  6670 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  9951/  8927 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 12251/  3559 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  9971/  3994 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 11385/  3083 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11471/  2255 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7984/  4372 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8277/  2379 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [ 10181/  1492 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5365/  4218 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5861/  2993 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6204/  2442 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12943, got signal=6
Threads: 2: [m_m] [64.5% done] [  5470/  1541 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12942, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12944, got signal=6

fio: (groupid=0): err= 0: pid=12942
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=7.6%, 100=45.1%
     lat (msec): 250=44.6%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12943
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.3%, 20=2.1%, 50=8.1%, 100=46.1%
     lat (msec): 250=43.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12944
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.0%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.1%, 50=6.2%, 100=49.8%
     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=3926/1958, merge=639/142, ticks=45924/29888, in_queue=75808, util=99.00%
0.25user 0.60system 0:21.69elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
408720inputs+205680outputs (0major+2456minor)pagefaults 0swaps