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] [ 14411/  9428 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 14648/  8269 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 14032/  6646 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 12011/  7801 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 15501/  3709 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [  6174/ 10494 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [  9611/  6455 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  6064/  8924 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [  9221/  5003 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.9% done] [  9260/  4673 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [ 12096/  2281 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  4864/  5843 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  9591/  1110 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  5481/  4352 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  6141/  4063 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29908, got signal=6
Threads: 2: [m_m] [58.1% done] [  8065/   313 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29909, got signal=6
Threads: 1: [m__] [59.4% done] [  3066/  4173 kb/s] [eta 00m:13s]
Threads: 1: [m__] [64.5% done] [   752/  6414 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29907, got signal=6

fio: (groupid=0): err= 0: pid=29907
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.2%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.3%, 20=3.0%, 50=24.6%, 100=20.2%
     lat (msec): 250=50.3%, 500=0.8%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29908
  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=1.5%, 50=9.9%, 100=56.2%
     lat (msec): 250=31.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29909
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=10.4%, 100=54.5%
     lat (msec): 250=33.5%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3412/2151, merge=786/96, ticks=40932/26736, in_queue=67664, util=99.10%
0.18user 0.31system 0:21.30elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
383176inputs+231064outputs (0major+2458minor)pagefaults 0swaps