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] [ 21857/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.0% done] [ 11840/  8981 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.8% done] [ 14931/  6467 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 10961/  6768 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  7431/ 10827 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  8932/  8610 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 11478/  6516 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [ 11950/  3409 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  4522/ 10463 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [ 12861/  2639 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [ 14630/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  5156/  6501 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  6725/  4457 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  3786/  6011 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [54.8% done] [  7252/  1533 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8335, got signal=6
Threads: 2: [mm_] [58.1% done] [  7237/  2056 kb/s] [eta 00m:13s]
Threads: 2: [mm_] [61.3% done] [  6621/  1134 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8334, got signal=6
Threads: 1: [m__] [62.5% done] [  4681/  3380 kb/s] [eta 00m:12s]
Threads: 1: [m__] [67.7% done] [  6280/   195 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8333, got signal=6

fio: (groupid=0): err= 0: pid=8333
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.5%, 8=92.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=3.0%, 50=21.4%, 100=21.5%
     lat (msec): 250=52.6%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8334
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=7.1%, 8=92.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=3.6%, 50=13.0%, 100=39.1%
     lat (msec): 250=43.0%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8335
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.6%, 8=91.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.3%, 50=10.6%, 100=56.9%
     lat (msec): 250=30.6%, 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=3926/2129, merge=692/142, ticks=44940/31228, in_queue=76160, util=99.08%
0.18user 0.39system 0:21.58elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
409024inputs+205272outputs (0major+2457minor)pagefaults 0swaps