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] [ 19699/  4567 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [  8676/ 10738 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 12182/  7533 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 16823/  2241 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 10543/  8541 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  9294/  8651 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 11686/  5997 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [41.7% done] [ 11788/  4742 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  7935/  8130 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 14429/   694 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 10455/  3596 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8460/  2778 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8224/  2806 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8944/  1549 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  2452/  6255 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  5767/  2094 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9444, got signal=6
Threads: 2: [m_m] [63.3% done] [  6829/  1350 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9445, got signal=6
Threads: 1: [m__] [64.5% done] [  7972/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9443, got signal=6

fio: (groupid=0): err= 0: pid=9443
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=9.2%, 8=90.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.3%, 10=0.7%, 20=4.6%, 50=13.0%, 100=33.1%
     lat (msec): 250=47.1%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9444
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=9.8%, 100=47.1%
     lat (msec): 250=41.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9445
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.0%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.4%, 20=1.2%, 50=10.0%, 100=48.8%
     lat (msec): 250=38.5%, 500=0.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3855/2037, merge=613/185, ticks=44336/32580, in_queue=76912, util=98.04%
0.22user 0.56system 0:21.22elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
407848inputs+206496outputs (0major+2453minor)pagefaults 0swaps