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] [ 11051/ 12605 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 15594/  5064 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 18096/  3990 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 15047/  2982 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.4% done] [ 19515/  1928 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 14602/  2713 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  9557/  7411 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  7484/  9192 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  7301/  7736 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  8187/  7252 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  7330/  6091 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [ 11247/  1414 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  6748/  4242 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  5108/  5271 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  4978/  3331 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3892/  3546 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21511, got signal=6
Threads: 2: [mm_] [63.3% done] [  4104/  3311 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21510, got signal=6
Threads: 1: [m__] [64.5% done] [  3750/  2851 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21509, got signal=6

fio: (groupid=0): err= 0: pid=21509
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.1%, 8=92.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.2%, 20=4.0%, 50=11.9%, 100=41.5%
     lat (msec): 250=40.7%, 500=0.7%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21510
  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=0.0%, 20=0.3%, 50=12.1%, 100=42.8%
     lat (msec): 250=43.8%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21511
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.8%, 50=8.8%, 100=57.5%
     lat (msec): 250=32.2%, 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=3530/2146, merge=681/37, ticks=41820/30056, in_queue=71868, util=97.83%
0.22user 0.56system 0:21.13elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
410552inputs+203744outputs (0major+2455minor)pagefaults 0swaps