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] [8.8% done] [  9570/  7891 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.8% done] [ 13215/  1338 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [  9957/  5125 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.2% done] [  9537/  5611 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [21.9% done] [  5243/ 10970 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [24.2% done] [  9168/  5328 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [28.1% done] [  6178/  7980 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [31.2% done] [  3888/ 12243 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [34.4% done] [ 12641/  4754 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [38.7% done] [ 11832/  4775 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [41.9% done] [  9412/  4824 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [45.2% done] [ 10284/  4282 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [48.4% done] [  9574/  4718 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [51.6% done] [  7712/  5397 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [54.8% done] [ 12056/   927 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.2% done] [  7264/  4612 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [59.4% done] [  4644/  4794 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.6% done] [  3473/  4876 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [61.8% done] [  7337/  1561 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11668, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [62.9% done] [  4779/  1610 kb/s] [eta 00m:13s]
fio: pid=11667, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11666, got signal=6

fio: (groupid=0): err= 0: pid=11666
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.7%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.8%, 50=19.2%, 100=37.6%
     lat (msec): 250=26.7%, 500=13.3%, 750=0.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11667
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.4%, 8=92.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=15.9%, 100=51.4%
     lat (msec): 250=18.4%, 500=12.2%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11668
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.3%, 50=13.7%, 100=50.5%
     lat (msec): 250=21.3%, 500=12.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3680/2288, merge=430/342, ticks=49580/40272, in_queue=89840, util=98.91%
0.52user 0.37system 0:23.51elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
373424inputs+240352outputs (0major+2463minor)pagefaults 0swaps