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: 0
Threads: 0
Threads: 3
Threads: 3
Threads: 3: [mmm] [12.5% done] [ 17445/  3449 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [  8305/ 12076 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 17274/  2733 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 11901/  7858 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 17034/   553 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 11433/  6272 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  9884/  5324 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  6085/  7756 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  7618/  7594 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [  4579/  8663 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  4616/  9082 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 11311/  2403 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  6394/  5226 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [ 10319/  1773 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  8769/  1675 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  5796/  3103 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  5636/  2929 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.5% done] [  8224/   740 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1011, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [63.6% done] [  6817/  1167 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1010, got signal=6
fio: pid=1009, got signal=6

fio: (groupid=0): err= 0: pid=1009
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.3%, 50=14.9%, 100=27.1%
     lat (msec): 250=55.4%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1010
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=8.7%, 100=39.7%
     lat (msec): 250=49.9%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1011
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.0%, 8=91.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.1%, 50=9.5%, 100=41.8%
     lat (msec): 250=46.0%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4082/3322, merge=732/35318, ticks=50304/477832, in_queue=528104, util=98.54%
0.39user 1.27system 0:25.64elapsed 6%CPU (0avgtext+0avgdata 0maxresident)k
419424inputs+194936outputs (0major+2459minor)pagefaults 0swaps