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] [12.5% done] [  9143/ 11421 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 11413/  8126 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 12027/  6712 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.1% done] [ 11429/  7366 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  7566/ 11662 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 14663/  3742 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 16103/  1460 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 15892/  1284 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9892/  4600 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 11193/  3408 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 11828/  2294 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  8976/  4567 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  7842/  5080 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8480/  1732 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4990/  4466 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  5792/  2281 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [61.3% done] [  3762/  3933 kb/s] [eta 00m:12s]
fio: pid=29967, got signal=6
Threads: 2: [_mm] [64.5% done] [  3916/  3983 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29969, got signal=6
Threads: 1: [_m_] [67.7% done] [  5759/  1289 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29968, got signal=6

fio: (groupid=0): err= 0: pid=29967
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.6%, 8=92.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.5%, 20=2.5%, 50=11.5%, 100=55.9%
     lat (msec): 250=29.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29968
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=1.4%, 50=13.3%, 100=27.4%
     lat (msec): 250=56.4%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29969
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.3%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=0.2%, 50=11.0%, 100=40.8%
     lat (msec): 250=46.6%, 500=0.6%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3979/2048, merge=434/244, ticks=47576/29152, in_queue=76724, util=98.06%
0.16user 0.26system 0:22.04elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
411784inputs+202608outputs (0major+2458minor)pagefaults 0swaps