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] [ 14150/  7028 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [  7691/ 12597 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 15619/  4510 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  9444/  7911 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 14573/  4421 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 14594/  1663 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 14429/  2799 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 13394/  4116 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 13080/  1913 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  8370/  4868 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7764/  5027 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  7574/  4681 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  8537/  3088 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  3673/  6087 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7915/  2111 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7293/  1179 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  7280/  2192 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3343, got signal=6
Threads: 2: [mm_] [62.5% done] [  3847/  3103 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3342, got signal=6
Threads: 1: [m__] [65.6% done] [  2302/  3473 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3341, got signal=6

fio: (groupid=0): err= 0: pid=3341
  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=0.1%, 20=1.8%, 50=12.2%, 100=35.7%
     lat (msec): 250=48.6%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3342
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.4%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.8%, 50=9.1%, 100=42.5%
     lat (msec): 250=46.5%, 500=0.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3343
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=7.0%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.3%, 20=0.6%, 50=11.5%, 100=51.7%
     lat (msec): 250=35.5%, 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=4170/1837, merge=762/16, ticks=50164/25864, in_queue=76028, util=99.09%
0.20user 0.40system 0:21.79elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
438112inputs+176208outputs (0major+2454minor)pagefaults 0swaps