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] [ 14900/  7602 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [  7923/ 12255 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 12954/  7590 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 12527/  6597 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 14220/  3668 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 15684/  2106 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11666/  4079 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  2531/ 12413 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 12210/  3799 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  8561/  6030 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8635/  4010 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8216/  5035 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8916/  2119 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [ 10103/   516 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  8863/  1923 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  3104/  4803 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  4807/  4132 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11604, got signal=6
Threads: 2: [mm_] [62.5% done] [  3108/  3181 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11603, got signal=6
Threads: 1: [m__] [65.6% done] [  3453/  3331 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11602, got signal=6

fio: (groupid=0): err= 0: pid=11602
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.9%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=2.1%, 50=15.3%, 100=30.5%
     lat (msec): 250=49.8%, 500=1.2%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11603
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.7%, 50=11.3%, 100=41.9%
     lat (msec): 250=43.9%, 500=0.3%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11604
  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=0.0%, 20=0.3%, 50=9.6%, 100=50.4%
     lat (msec): 250=39.1%, 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=3710/2450, merge=494/189, ticks=45440/38232, in_queue=83664, util=99.09%
0.19user 0.36system 0:21.97elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
388984inputs+225272outputs (0major+2461minor)pagefaults 0swaps