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] [ 18460/  3701 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 16733/  5136 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 18366/  1743 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 13923/  6320 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 14612/  3116 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 16249/  1219 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  7188/ 10650 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11702/  5351 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 11987/  2946 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  9819/  4470 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11511/  2145 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [ 10930/  2771 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  5566/  5867 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  6749/  4209 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6684/  2946 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8573/   698 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10215, got signal=6
Threads: 2: [_mm] [63.3% done] [  4152/  3384 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10216, got signal=6
Threads: 1: [__m] [64.5% done] [  6078/  1300 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10217, got signal=6

fio: (groupid=0): err= 0: pid=10215
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.5%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=1.7%, 50=8.3%, 100=49.4%
     lat (msec): 250=40.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10216
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.3%, 50=10.5%, 100=45.5%
     lat (msec): 250=40.6%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10217
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.4%, 20=2.2%, 50=10.4%, 100=43.0%
     lat (msec): 250=42.3%, 500=0.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4162/1787, merge=593/216, ticks=48716/31728, in_queue=80428, util=97.80%
0.19user 0.52system 0:21.06elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
435200inputs+179120outputs (0major+2451minor)pagefaults 0swaps