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] [ 11128/ 10636 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 15815/  3458 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 17832/  2713 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  7533/ 12161 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 16209/  2940 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  9354/  7598 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  5352/ 10656 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  9318/  5401 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  4600/  8798 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  5632/  7269 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  9701/  2424 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8427/  3949 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [ 10583/  2322 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  8049/  1919 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  4986/  5385 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  4722/  4112 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  6135/  1747 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9874, got signal=6
Threads: 2: [m_m] [64.5% done] [  7911/   386 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [65.6% done] [  4592/  2163 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9875, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9873, got signal=6

fio: (groupid=0): err= 0: pid=9873
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.2%, 8=95.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.6%, 50=10.6%, 100=36.2%
     lat (msec): 250=51.0%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9874
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.2%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=7.9%, 100=50.8%
     lat (msec): 250=39.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9875
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.8%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.3%, 20=1.5%, 50=10.9%, 100=47.4%
     lat (msec): 250=38.9%, 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=3873/2292, merge=603/75, ticks=46928/35820, in_queue=82732, util=98.99%
0.17user 0.65system 0:22.58elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
399480inputs+214480outputs (0major+2463minor)pagefaults 0swaps