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] [12.5% done] [ 18547/  2326 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.0% done] [ 17152/  2348 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.8% done] [ 14281/  3664 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 10835/  5670 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 10530/  5186 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  4421/ 11629 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 10811/  3164 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 12605/  1435 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [  9123/  6211 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.9% done] [ 10091/  4022 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [  8273/  4018 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  8570/  4218 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [ 13544/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [ 11734/   219 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  6316/  3738 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.0% done] [  6215/  3815 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  4331/  4519 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.5% done] [  7313/  1777 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.6% done] [  8399/    65 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17782, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17783, got signal=6
Threads: 1: [m__] [66.7% done] [  3160/  3672 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17781, got signal=6

fio: (groupid=0): err= 0: pid=17781
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.0%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.4%, 20=1.2%, 50=11.1%, 100=33.3%
     lat (msec): 250=50.3%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17782
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=2.0%, 50=8.7%, 100=44.6%
     lat (msec): 250=42.5%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17783
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 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=1.4%, 50=7.4%, 100=47.3%
     lat (msec): 250=41.2%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4348/1624, merge=494/434, ticks=51720/31724, in_queue=83436, util=99.10%
0.36user 0.35system 0:22.84elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
454144inputs+160240outputs (0major+2463minor)pagefaults 0swaps