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] [15.0% done] [ 15798/  6891 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 11223/  9150 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 14754/  6326 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 13978/  7350 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  3011/ 14522 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  8659/  9805 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  5376/ 11601 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [  7111/  8244 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.8% done] [ 10268/  4392 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  5225/  7066 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  5213/  8037 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8903/  3701 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  9146/  2145 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  7245/  3287 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  4518/  4238 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6704/  2482 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27090, got signal=6
Threads: 2: [mm_] [63.3% done] [  6111/  1024 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27088, got signal=6
Threads: 1: [_m_] [64.5% done] [  1966/  4803 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27089, got signal=6

fio: (groupid=0): err= 0: pid=27088
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.3%, 50=8.7%, 100=49.0%
     lat (msec): 250=40.9%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27089
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.2%, 8=95.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=14.6%, 100=40.1%
     lat (msec): 250=43.4%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27090
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=8.3%, 100=47.7%
     lat (msec): 250=42.5%, 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=2933/2700, merge=469/180, ticks=34708/38236, in_queue=72944, util=99.03%
0.64user 0.37system 0:21.29elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
335144inputs+279080outputs (0major+2460minor)pagefaults 0swaps