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] [  6695/ 15070 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [  8159/ 11295 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [  7964/ 11921 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  9253/  9985 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  9900/  8419 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 14826/  3083 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  6865/ 10111 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  7874/  7829 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 10384/  2741 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  8627/  5975 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  8956/  4702 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  3912/  7927 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  7272/  4779 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  4592/  5670 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  5727/  4693 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  6369/  3168 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23921, got signal=6
Threads: 2: [m_m] [59.4% done] [  5995/  1850 kb/s] [eta 00m:13s]
Threads: 2: [m_m] [62.5% done] [  2985/  4283 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23922, got signal=6
Threads: 1: [m__] [65.6% done] [  5853/  1757 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23920, got signal=6

fio: (groupid=0): err= 0: pid=23920
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.4%, 8=91.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=3.9%, 50=15.5%, 100=28.8%
     lat (msec): 250=50.1%, 500=0.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23921
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.1%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.1%, 20=0.4%, 50=8.1%, 100=47.6%
     lat (msec): 250=43.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23922
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=8.9%, 100=45.3%
     lat (msec): 250=44.7%, 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=3238/2607, merge=448/75, ticks=39816/39444, in_queue=79252, util=98.09%
0.21user 0.61system 0:22.31elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
342248inputs+272056outputs (0major+2465minor)pagefaults 0swaps