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] [13.0% done] [ 11795/ 10075 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [  9513/ 12271 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 10538/  9997 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.1% done] [  5002/ 14827 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [31.8% done] [ 11470/  8570 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [  8208/  6581 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10856/  5763 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  6947/  9473 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 12088/  3401 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 10359/  4547 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  6996/  5910 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8436/  3733 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  7227/  4592 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  9248/   877 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8578/   877 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  8049/  2037 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [63.3% done] [  7184/  1446 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19844, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19843, got signal=6
Threads: 1: [m__] [66.7% done] [  3209/  2298 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19842, got signal=6

fio: (groupid=0): err= 0: pid=19842
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.9%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.4%, 20=2.0%, 50=10.4%, 100=34.2%
     lat (msec): 250=51.3%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19843
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=6.1%, 100=56.2%
     lat (msec): 250=36.6%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19844
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.6%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.6%, 50=9.9%, 100=46.0%
     lat (msec): 250=42.8%, 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=3605/2097, merge=613/337, ticks=42800/35560, in_queue=78348, util=98.16%
0.20user 0.50system 0:21.26elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
390856inputs+223280outputs (0major+2455minor)pagefaults 0swaps