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] [ 14518/  7237 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 15741/  3136 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  6918/ 12218 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 12588/  6129 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 10880/  6764 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [ 13243/  3839 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 12503/  4185 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  9526/  4889 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  2757/ 11917 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 10327/  3530 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 10477/  3502 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  6544/  5779 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [ 10762/  2037 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [ 11885/   671 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  3900/  5733 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6735/  2123 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  5930/  1317 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9010, got signal=6
Threads: 2: [m_m] [62.5% done] [  2761/  4039 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9011, got signal=6
Threads: 1: [m__] [65.6% done] [  1602/  4405 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9009, got signal=6

fio: (groupid=0): err= 0: pid=9009
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=6.1%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=2.5%, 50=12.4%, 100=27.4%
     lat (msec): 250=55.7%, 500=0.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9010
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.9%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=1.8%, 50=8.6%, 100=55.8%
     lat (msec): 250=33.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9011
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=8.5%, 100=47.2%
     lat (msec): 250=43.1%, 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=3846/2289, merge=641/125, ticks=47448/32476, in_queue=79920, util=99.18%
0.21user 0.31system 0:21.98elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
402448inputs+211888outputs (0major+2461minor)pagefaults 0swaps