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] [13.0% done] [ 10621/  9191 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 17485/  4022 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 14972/  6178 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 17604/  2900 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  6886/ 11283 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 14634/  3103 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 15546/   976 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  9790/  6105 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 11116/  3636 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 11844/  3278 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  7829/  6776 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8122/  3705 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  6471/  4811 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  4649/  4661 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  7785/   756 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8772, got signal=6
Threads: 2: [m_m] [58.1% done] [  7764/   858 kb/s] [eta 00m:13s]
Threads: 2: [m_m] [59.4% done] [  4612/  3339 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8773, got signal=6
Threads: 1: [m__] [62.5% done] [  5214/  1590 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8771, got signal=6

fio: (groupid=0): err= 0: pid=8771
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=8.0%, 8=91.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=4.9%, 50=19.3%, 100=19.4%
     lat (msec): 250=53.8%, 500=1.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8772
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=7.3%, 8=92.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=1.3%, 50=10.4%, 100=56.4%
     lat (msec): 250=31.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8773
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.1%, 50=15.3%, 100=43.4%
     lat (msec): 250=39.1%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4203/1763, merge=553/102, ticks=48792/26288, in_queue=75080, util=99.11%
0.17user 0.36system 0:21.40elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
448056inputs+166440outputs (0major+2452minor)pagefaults 0swaps