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] [ 14742/  6822 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 21073/  1142 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 13568/  5546 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 10010/  9570 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 13897/  4551 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 11105/  6505 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13105/  3697 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 15391/   968 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  5991/  7345 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  6015/  7972 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 13372/  1093 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 11031/  2029 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8220/  2255 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7171/  3502 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5507/  4344 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4372/  4421 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13881, got signal=6
Threads: 2: [m_m] [61.3% done] [  2730/  4047 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [64.5% done] [  2611/  4563 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13882, got signal=6
Threads: 1: [m__] [67.7% done] [  1618/  4242 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13880, got signal=6

fio: (groupid=0): err= 0: pid=13880
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.8%, 50=14.4%, 100=42.9%
     lat (msec): 250=40.4%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13881
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=10.4%, 100=46.5%
     lat (msec): 250=42.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13882
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.5%, 50=9.8%, 100=45.5%
     lat (msec): 250=43.1%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3818/2226, merge=735/173, ticks=49144/29876, in_queue=79012, util=98.99%
0.19user 0.40system 0:21.81elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
421920inputs+192144outputs (0major+2465minor)pagefaults 0swaps