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] [ 20008/  2824 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 14146/  6821 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 16534/  3465 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.1% done] [ 15965/  4547 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 12377/  5100 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  9760/  7391 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  9766/  8208 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  5794/  8488 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  8764/  6241 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 12471/  1980 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 13726/  1194 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  7337/  4421 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  7862/  3608 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5784/  5210 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7264/  3144 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3445/  5225 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  7008/  1753 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  4535/  2778 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6676, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6675, got signal=6
Threads: 1: [m__] [65.6% done] [  3180/  3005 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6674, got signal=6

fio: (groupid=0): err= 0: pid=6674
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.1%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.8%, 50=8.2%, 100=43.6%
     lat (msec): 250=44.8%, 500=0.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6675
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.3%, 50=8.7%, 100=47.7%
     lat (msec): 250=42.1%, 500=0.4%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6676
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.2%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.8%, 50=8.9%, 100=44.6%
     lat (msec): 250=45.2%, 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=3785/2348, merge=390/215, ticks=47136/37068, in_queue=84204, util=98.34%
0.27user 0.46system 0:21.95elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
402544inputs+211656outputs (0major+2460minor)pagefaults 0swaps