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] [ 11170/  9837 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 14246/  6473 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [  9261/  9302 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 15627/  3738 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12791/  4534 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  7956/  8293 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11242/  5539 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  9993/  5389 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 11140/  5279 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  7269/  6912 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 13349/  1586 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  6790/  3974 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  3693/  7345 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  3738/  7102 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5556/  4047 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5234/  4034 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  8647/  1422 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  6064/  1513 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16389, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16390, got signal=6
Threads: 1: [m__] [65.6% done] [  4990/  2017 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16388, got signal=6

fio: (groupid=0): err= 0: pid=16388
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.5%, 50=8.0%, 100=43.7%
     lat (msec): 250=45.6%, 500=1.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16389
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.0%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.3%, 50=6.6%, 100=47.1%
     lat (msec): 250=44.1%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16390
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 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=0.9%, 50=7.9%, 100=45.5%
     lat (msec): 250=44.5%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3676/2473, merge=587/186, ticks=45688/37604, in_queue=83292, util=98.18%
0.20user 0.61system 0:22.12elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
385320inputs+228552outputs (0major+2463minor)pagefaults 0swaps