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] [ 10189/ 12080 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [  9501/ 10669 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [  8692/ 10514 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [  9212/ 11185 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 12548/  6154 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 13760/  3945 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 12593/  5499 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11620/  4039 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 10152/  4803 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  9339/  4429 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  7927/  6089 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  9094/  3262 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7358/  2940 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  5828/  4531 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5820/  3510 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6809/  2176 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  7223/  1008 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14586, got signal=6
Threads: 2: [m_m] [64.5% done] [  4653/  2631 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14585, got signal=6
Threads: 1: [__m] [67.7% done] [  4071/  2420 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14587, got signal=6

fio: (groupid=0): err= 0: pid=14585
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=2.5%, 50=6.2%, 100=39.8%
     lat (msec): 250=50.7%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14586
  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=0.1%, 10=0.0%, 20=0.7%, 50=8.9%, 100=50.2%
     lat (msec): 250=39.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14587
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.9%, 50=10.3%, 100=43.6%
     lat (msec): 250=43.8%, 500=0.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3874/2184, merge=638/83, ticks=46500/31880, in_queue=78376, util=99.08%
0.22user 0.35system 0:21.64elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
393856inputs+220488outputs (0major+2455minor)pagefaults 0swaps