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] [ 15391/  6776 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 18246/  2957 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 13466/  6395 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [ 15847/  3563 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 16896/  2334 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [  8082/  9827 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  4811/ 10522 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  5221/ 10150 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  8350/  6914 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 11153/  2989 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  6666/  7118 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 11677/  2017 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  9790/  2749 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  7317/  3258 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5291/  4311 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3611/  5129 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4913/  2229 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28790, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28791, got signal=6
Threads: 1: [m__] [64.5% done] [  3733/  3095 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28789, got signal=6

fio: (groupid=0): err= 0: pid=28789
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.1%, 50=15.5%, 100=33.5%
     lat (msec): 250=47.2%, 500=0.7%, 750=0.2%, 1000=0.2%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=28790
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.6%, 50=7.7%, 100=50.1%
     lat (msec): 250=40.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28791
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.0%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=7.5%, 100=48.8%
     lat (msec): 250=42.6%, 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=3388/2342, merge=804/138, ticks=42564/29844, in_queue=72404, util=99.22%
0.16user 0.32system 0:21.29elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
388704inputs+225512outputs (0major+2457minor)pagefaults 0swaps