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] [  9835/ 12828 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 12820/  7907 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 20532/   634 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 13215/  5999 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [  6898/ 11726 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [  8309/  8557 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 15696/   756 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 11380/  5060 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  9851/  4844 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  8366/  6951 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8651/  3880 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  9257/  2330 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  7581/  4551 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  2688/  7183 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6211/  3522 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8989/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6780/  1602 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24928, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24929, got signal=6
Threads: 1: [m__] [64.5% done] [  5678/  1305 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24927, got signal=6

fio: (groupid=0): err= 0: pid=24927
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.8%, 8=91.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=2.7%, 50=11.9%, 100=40.0%
     lat (msec): 250=43.8%, 500=0.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24928
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.6%, 50=8.9%, 100=52.0%
     lat (msec): 250=38.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24929
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.1%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=5.8%, 100=55.5%
     lat (msec): 250=37.3%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3685/2134, merge=450/204, ticks=42620/30760, in_queue=73380, util=98.12%
0.20user 0.60system 0:21.49elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
383856inputs+230312outputs (0major+2459minor)pagefaults 0swaps