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] [10.7% done] [ 10995/ 10126 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [14.8% done] [ 14004/  4051 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [18.5% done] [ 10678/  4941 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [23.1% done] [ 18653/   825 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [26.9% done] [ 12962/  4270 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [  6727/  9973 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 15371/  1964 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.0% done] [  9585/  5380 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [42.3% done] [  8606/  5926 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  4527/ 10559 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [ 11946/  2192 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7716/  4986 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [ 12572/     0 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [ 10595/  1484 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  9676/  1020 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.0% done] [  8114/  2033 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  7606/  1033 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9701, got signal=6
Threads: 2: [_mm] [62.5% done] [  5835/  2230 kb/s] [eta 00m:12s]
Threads: 2: [_mm] [63.6% done] [  4429/  2468 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9703, got signal=6
Threads: 1: [_m_] [66.7% done] [  5409/  1423 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9702, got signal=6

fio: (groupid=0): err= 0: pid=9701
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.7%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.4%, 20=1.7%, 50=9.2%, 100=44.5%
     lat (msec): 250=42.8%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9702
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.2%, 8=95.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=8.5%, 100=40.9%
     lat (msec): 250=48.2%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9703
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.9%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.1%, 50=9.2%, 100=37.2%
     lat (msec): 250=49.9%, 500=1.7%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4272/1540, merge=649/266, ticks=51712/29368, in_queue=81076, util=99.11%
0.19user 0.36system 0:22.71elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
448680inputs+165480outputs (0major+2452minor)pagefaults 0swaps