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] [ 14222/  6489 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 13051/  7639 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 21349/   146 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 14088/  7102 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  9845/  8399 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 10223/  7220 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  9248/  8269 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 10443/  5587 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 10719/  4075 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 11418/  2828 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  7810/  5026 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  8317/  4079 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  7070/  3332 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  7956/  3165 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  2031/  5668 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16125, got signal=6
Threads: 2: [m_m] [60.0% done] [  3043/  5623 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [61.3% done] [  4396/  3868 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16124, got signal=6
Threads: 1: [__m] [64.5% done] [  2941/  3709 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16126, got signal=6

fio: (groupid=0): err= 0: pid=16124
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.7%, 50=7.9%, 100=49.5%
     lat (msec): 250=39.7%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16125
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.6%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=10.6%, 100=58.4%
     lat (msec): 250=30.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16126
  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=3.7%, 50=17.6%, 100=21.6%
     lat (msec): 250=55.1%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3607/2256, merge=656/80, ticks=43804/30072, in_queue=73872, util=99.05%
0.19user 0.31system 0:21.09elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
398432inputs+215056outputs (0major+2449minor)pagefaults 0swaps