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] [14.3% done] [ 18454/  4018 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 15757/  5763 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 13951/  5361 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 15025/  4750 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 11100/  7463 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 11612/  5413 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 12019/  5515 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  6992/  5788 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 10953/  5417 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 11751/  2530 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 11218/  2143 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 11409/  1732 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7370/  4331 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  4295/  5812 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6235/  3282 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [ 10262/   248 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=461, got signal=6
Threads: 2: [m_m] [63.3% done] [  3721/  3319 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=462, got signal=6
Threads: 1: [m__] [64.5% done] [  1098/  4527 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=460, got signal=6

fio: (groupid=0): err= 0: pid=460
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.7%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.2%, 20=2.3%, 50=13.0%, 100=37.2%
     lat (msec): 250=45.3%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=461
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=8.6%, 100=47.2%
     lat (msec): 250=42.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=462
  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=0.0%, 20=1.1%, 50=8.8%, 100=47.2%
     lat (msec): 250=41.6%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3874/2141, merge=554/139, ticks=46936/32888, in_queue=79824, util=98.22%
0.17user 0.52system 0:21.43elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
417952inputs+196240outputs (0major+2452minor)pagefaults 0swaps