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] [ 19565/  3575 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 11303/  8826 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 14222/  5948 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 17074/  4136 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 15102/  3705 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 15021/  3412 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 11341/  6066 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 14020/  2346 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 10947/  5185 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  9660/  5564 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  4920/  5660 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  5861/  6036 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8265/  4209 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  6725/  4181 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6826/  3173 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7154/  2106 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16668, got signal=6
Threads: 2: [m_m] [63.3% done] [  7395/   406 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16669, got signal=6
Threads: 1: [m__] [66.7% done] [  3925/  2729 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16667, got signal=6

fio: (groupid=0): err= 0: pid=16667
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.2%, 50=13.0%, 100=43.1%
     lat (msec): 250=42.0%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16668
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.9%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.7%, 50=8.6%, 100=50.1%
     lat (msec): 250=39.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16669
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.4%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=10.2%, 100=45.2%
     lat (msec): 250=43.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3648/2063, merge=452/143, ticks=42784/29788, in_queue=72576, util=99.19%
0.21user 0.31system 0:21.03elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
398768inputs+215512outputs (0major+2454minor)pagefaults 0swaps