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] [ 12214/ 11536 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 10172/ 10543 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 10266/  8212 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  2733/ 15338 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 15354/  4018 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 12885/  4969 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  9550/  7439 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 12674/  4506 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  7618/  6333 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 11096/  3376 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 13007/   886 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  7447/  4962 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  8366/  3347 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7101/  2940 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7097/  3205 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [60.0% done] [  6560/  1293 kb/s] [eta 00m:12s]
fio: pid=27622, got signal=6
Threads: 2: [m_m] [63.3% done] [  4600/  3432 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27623, got signal=6
Threads: 1: [m__] [64.5% done] [  5401/  1810 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27621, got signal=6

fio: (groupid=0): err= 0: pid=27621
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=6.3%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.4%, 10=0.1%, 20=1.2%, 50=12.9%, 100=33.2%
     lat (msec): 250=50.5%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27622
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=7.7%, 8=91.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.1%, 20=1.6%, 50=11.2%, 100=55.5%
     lat (msec): 250=31.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27623
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.4%, 50=8.8%, 100=47.9%
     lat (msec): 250=40.5%, 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=3723/2031, merge=521/155, ticks=41860/29944, in_queue=71796, util=98.56%
0.22user 0.33system 0:21.15elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
398920inputs+215392outputs (0major+2456minor)pagefaults 0swaps