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] [ 11853/  8992 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [19.0% done] [ 17600/  3750 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 17074/  3478 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [  8878/ 10500 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  5377/ 10970 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 11003/  7797 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  7968/ 10026 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 11207/  4599 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 10274/  4677 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  4555/  9187 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  6387/  7204 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  3006/  7651 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  4620/  5636 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7338/  3746 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5652/  3892 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7281/  1792 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [63.3% done] [  5818/  2027 kb/s] [eta 00m:11s]
fio: pid=25125, got signal=6
Threads: 2: [_mm] [64.5% done] [  7643/    56 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25126, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25127, got signal=6

fio: (groupid=0): err= 0: pid=25125
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.6%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=3.3%, 50=8.3%, 100=50.2%
     lat (msec): 250=37.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25126
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.1%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=0.8%, 50=9.4%, 100=51.8%
     lat (msec): 250=36.8%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25127
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.1%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.7%, 20=2.9%, 50=10.7%, 100=36.7%
     lat (msec): 250=47.6%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3646/2356, merge=630/148, ticks=41304/34664, in_queue=75964, util=99.02%
0.44user 0.33system 0:21.21elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
378624inputs+236040outputs (0major+2459minor)pagefaults 0swaps