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] [12.5% done] [ 17083/  2892 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 13211/  5657 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [19.2% done] [ 14834/  2753 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [22.2% done] [  2928/ 14179 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [25.9% done] [ 10038/  7659 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [29.6% done] [ 14187/  2314 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [32.1% done] [ 11832/  5478 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [35.7% done] [  7793/  7842 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [39.3% done] [ 13654/  2700 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [41.4% done] [ 10103/  3811 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [44.8% done] [ 11071/  3180 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [48.3% done] [ 10087/  2578 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  9717/  1769 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [53.3% done] [ 10351/   911 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [54.8% done] [  6845/  3961 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.2% done] [  6361/  3233 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30912, got signal=6
Threads: 2: [m_m] [57.6% done] [  4986/  3070 kb/s] [eta 00m:14s]
Threads: 2: [m_m] [58.8% done] [  1675/  5153 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30913, got signal=6
Threads: 1: [m__] [63.6% done] [  4759/  2830 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30911, got signal=6

fio: (groupid=0): err= 0: pid=30911
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=7.4%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.2%, 20=3.0%, 50=23.9%, 100=20.1%
     lat (msec): 250=51.3%, 500=0.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30912
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=6.1%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.5%, 20=2.7%, 50=7.6%, 100=55.3%
     lat (msec): 250=33.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30913
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.6%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.2%, 50=10.3%, 100=48.6%
     lat (msec): 250=39.1%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4161/1934, merge=672/154, ticks=49224/28876, in_queue=78096, util=98.94%
0.19user 0.34system 0:22.43elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
430256inputs+184664outputs (0major+2464minor)pagefaults 0swaps