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] [ 11763/ 11653 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 10453/ 10002 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 11519/  8826 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 18259/  1582 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 14163/  4608 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  7203/  9819 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 15074/   939 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  9823/  4982 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  4600/ 10351 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  5308/  6695 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 14431/   614 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  7512/  5177 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  4388/  7077 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  7028/  3632 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7846/  2668 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6353/  2591 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  6133/  2355 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24161, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24162, got signal=6
Threads: 1: [m__] [62.5% done] [  7919/    52 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24160, got signal=6

fio: (groupid=0): err= 0: pid=24160
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=8.0%, 8=91.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.1%, 50=13.7%, 100=35.8%
     lat (msec): 250=45.9%, 500=0.8%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24161
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.6%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=6.7%, 100=50.6%
     lat (msec): 250=40.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24162
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.1%, 50=7.8%, 100=47.1%
     lat (msec): 250=41.9%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3806/1994, merge=483/153, ticks=44820/30380, in_queue=75188, util=98.34%
0.18user 0.73system 0:21.77elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
412680inputs+201616outputs (0major+2450minor)pagefaults 0swaps