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] [15.0% done] [ 10967/ 10500 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 13962/  6030 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [  8695/ 10487 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [ 15181/  3315 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  3543/ 13746 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  5526/ 11719 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 10626/  6408 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 11459/  5449 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  7996/  6074 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  5140/  7875 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8118/  4193 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 10825/  2588 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  6757/  4555 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8407/  1869 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6119/  4189 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.0% done] [  7293/  1227 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  7163/  1133 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13282, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13281, got signal=6
Threads: 1: [m__] [64.5% done] [  5940/  2023 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13280, got signal=6

fio: (groupid=0): err= 0: pid=13280
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=15.0%, 100=33.6%
     lat (msec): 250=48.2%, 500=0.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13281
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.4%, 4=5.1%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.3%, 10=0.4%, 20=1.7%, 50=8.4%, 100=36.4%
     lat (msec): 250=52.3%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13282
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.2%, 8=92.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.2%, 50=10.1%, 100=45.1%
     lat (msec): 250=42.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3482/2242, merge=511/188, ticks=41440/34384, in_queue=75820, util=97.96%
0.17user 0.71system 0:21.85elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
385592inputs+228736outputs (0major+2458minor)pagefaults 0swaps