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] [ 19031/  3790 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [  6956/ 13092 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 15794/  3469 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 13783/  4551 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 11450/  5869 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [  4331/ 12544 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 10581/  6867 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 13824/  3035 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 14175/  2131 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 10540/  4924 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  7260/  6125 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [ 13980/     0 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [ 10957/  2220 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7467/  3254 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5672/  3685 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  3473/  5698 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  1928/  5446 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13276, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [_mm] [62.5% done] [  4474/  2355 kb/s] [eta 00m:12s]
fio: pid=13277, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13278, got signal=6

fio: (groupid=0): err= 0: pid=13276
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.0%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.3%, 50=7.2%, 100=46.4%
     lat (msec): 250=44.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13277
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.2%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.2%, 20=1.0%, 50=8.6%, 100=50.8%
     lat (msec): 250=38.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13278
  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=0.2%, 4=0.0%, 10=0.2%, 20=3.9%, 50=11.5%, 100=35.4%
     lat (msec): 250=47.2%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4077/1912, merge=627/150, ticks=49744/27324, in_queue=77060, util=98.99%
0.20user 0.58system 0:21.34elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
439096inputs+175280outputs (0major+2459minor)pagefaults 0swaps