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] [ 10032/ 12227 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 12877/  8614 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 14791/  3165 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  9866/  9114 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  4453/ 12426 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 16217/  2299 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  4043/ 12665 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  4640/ 10735 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  7444/  9532 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [   109/ 11450 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8066/  5319 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  9081/  2836 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  9569/  2901 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  6899/  4506 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7700/  2771 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6708/  2043 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  8878/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3580, got signal=6
Threads: 2: [m_m] [64.5% done] [  5420/  2429 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3581, got signal=6
Threads: 1: [m__] [65.6% done] [  2746/  3510 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3579, got signal=6

fio: (groupid=0): err= 0: pid=3579
  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=1.3%, 50=13.8%, 100=38.3%
     lat (msec): 250=45.3%, 500=0.8%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3580
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.1%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.2%, 20=3.1%, 50=8.8%, 100=46.0%
     lat (msec): 250=41.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3581
  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=1.5%, 50=11.1%, 100=35.5%
     lat (msec): 250=50.8%, 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=3525/2648, merge=375/177, ticks=42300/40216, in_queue=82516, util=97.94%
0.32user 0.67system 0:22.10elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
356352inputs+257944outputs (0major+2456minor)pagefaults 0swaps