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] [ 17221/  3372 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 13642/  7044 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 19488/  2052 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 15623/  3148 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 10384/  7968 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  6284/ 11523 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10063/  7154 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  8582/  7773 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 10309/  1974 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12263/  3180 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  7903/  5869 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  4266/  7139 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7386/  4608 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  9150/  2409 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7643/  1844 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7293/  2058 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3827/  4315 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26108, got signal=6
Threads: 2: [mm_] [64.5% done] [  3994/  2546 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26107, got signal=6
Threads: 1: [m__] [67.7% done] [  6158/   553 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26106, got signal=6

fio: (groupid=0): err= 0: pid=26106
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.2%, 50=8.3%, 100=41.4%
     lat (msec): 250=46.6%, 500=1.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26107
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.6%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=9.0%, 100=43.5%
     lat (msec): 250=44.7%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26108
  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=0.1%, 20=0.0%, 50=10.0%, 100=48.0%
     lat (msec): 250=41.1%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3918/2036, merge=716/167, ticks=49132/36748, in_queue=85868, util=99.02%
0.37user 0.35system 0:21.61elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
430064inputs+184088outputs (0major+2452minor)pagefaults 0swaps