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] [14.3% done] [ 11336/ 12231 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [  9923/ 10455 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 13718/  6794 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 17657/  1671 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 14683/  4470 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 15367/  2078 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10780/  6168 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  2932/ 12833 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 10640/  4909 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  9902/  4551 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  9086/  5141 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8082/  3547 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7341/  4238 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  5255/  5450 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  4811/  5091 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8643/  1309 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [65.5% done] [  2450/  4518 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26516, got signal=6
Threads: 2: [m_m] [64.5% done] [  6878/  1484 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26517, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26515, got signal=6

fio: (groupid=0): err= 0: pid=26515
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.9%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.3%, 50=8.3%, 100=42.4%
     lat (msec): 250=46.2%, 500=1.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26516
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.5%, 50=7.0%, 100=47.6%
     lat (msec): 250=41.9%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26517
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.5%, 8=93.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.6%, 50=9.9%, 100=45.2%
     lat (msec): 250=41.9%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3571/2294, merge=516/243, ticks=41664/37196, in_queue=78848, util=99.01%
0.32user 0.38system 0:21.04elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
380456inputs+233464outputs (0major+2457minor)pagefaults 0swaps