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] [12.0% done] [  9892/ 10355 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.7% done] [ 14803/  5745 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [  4388/ 15261 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 10910/  8005 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 13945/  5083 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [ 11787/  5938 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 15566/  2493 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 12861/  3616 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 11913/  2851 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 12966/  2722 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  8419/  5466 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  2660/  9286 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  8492/  2147 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  6117/  4372 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  5989/  4449 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  8545/  1866 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30785, got signal=6
Threads: 2: [mm_] [59.4% done] [  5507/  2302 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30784, got signal=6
Threads: 1: [m__] [62.5% done] [  7337/   837 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [67.7% done] [  7907/     0 kb/s] [eta 00m:10s]
fio: pid=30783, got signal=6

fio: (groupid=0): err= 0: pid=30783
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=8.9%, 8=90.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=5.0%, 50=19.3%, 100=19.4%
     lat (msec): 250=54.1%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30784
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.4%, 50=10.6%, 100=46.6%
     lat (msec): 250=38.5%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30785
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.7%, 50=10.3%, 100=59.1%
     lat (msec): 250=29.2%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3857/2288, merge=549/221, ticks=42836/57056, in_queue=81480, util=98.58%
0.19user 0.50system 0:21.52elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
387200inputs+226736outputs (0major+2455minor)pagefaults 0swaps