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] [13.0% done] [ 22749/     0 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 16355/  4311 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 10457/  9416 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 13369/  5438 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 20223/     0 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 16741/  1850 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  8476/  8387 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  8130/  7976 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  7585/  7057 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [ 12982/  2076 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  7707/  6430 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8013/  4299 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  2558/  7716 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  6251/  3933 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  9997/   703 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2834, got signal=6
Threads: 2: [mm_] [56.2% done] [  3014/  4120 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2833, got signal=6
Threads: 1: [m__] [57.6% done] [  8004/     0 kb/s] [eta 00m:14s]
Threads: 1: [m__] [62.5% done] [  4356/  2969 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [67.7% done] [  4152/  2944 kb/s] [eta 00m:10s]
fio: pid=2832, got signal=6

fio: (groupid=0): err= 0: pid=2832
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.9%, 8=92.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=3.0%, 50=24.3%, 100=15.5%
     lat (msec): 250=55.2%, 500=1.0%, 750=0.3%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2833
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.7%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.5%, 20=2.3%, 50=11.8%, 100=45.8%
     lat (msec): 250=38.5%, 500=0.5%, 750=0.2%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2834
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.0%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=12.5%, 100=55.5%
     lat (msec): 250=31.0%, 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=3963/1933, merge=653/143, ticks=49192/24408, in_queue=73596, util=99.09%
0.22user 0.39system 0:21.51elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
437200inputs+177072outputs (0major+2455minor)pagefaults 0swaps