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] [ 21243/   812 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [19.0% done] [ 11673/  9330 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 15171/  4197 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 11531/  7797 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 14228/  3465 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 17962/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 11856/  6019 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [ 11173/  4881 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.8% done] [  7537/  6853 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12824/  2159 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  5971/  5275 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  9546/  3453 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6578/  3868 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [ 10482/  1911 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5186/  3432 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  2566/  5422 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4733/  2759 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8062, got signal=6
Threads: 2: [m_m] [64.5% done] [  5670/  1350 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8063, got signal=6
Threads: 1: [m__] [67.7% done] [  5867/   755 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8061, got signal=6

fio: (groupid=0): err= 0: pid=8061
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.6%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.4%, 50=7.6%, 100=41.8%
     lat (msec): 250=49.0%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8062
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.8%, 50=7.9%, 100=50.8%
     lat (msec): 250=40.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8063
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.8%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.3%, 10=0.1%, 20=1.4%, 50=7.7%, 100=45.8%
     lat (msec): 250=44.0%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4101/1991, merge=626/145, ticks=49964/32868, in_queue=82828, util=98.34%
0.25user 0.52system 0:21.96elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
440624inputs+173712outputs (0major+2459minor)pagefaults 0swaps