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] [ 10524/ 10577 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 14883/  6032 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  6351/ 13279 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 17286/  2448 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 11121/  7891 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 10242/  8098 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 12438/  4335 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9660/  7260 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 12905/  2458 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10225/  4356 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 11742/  3343 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  4429/  7341 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 10640/  1557 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  6569/  4242 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  3969/  5478 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5206/  4340 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [   955/  5698 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21548, got signal=6
Threads: 2: [mm_] [62.5% done] [   894/  5967 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21547, got signal=6
Threads: 1: [m__] [67.7% done] [  4152/  2338 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21546, got signal=6

fio: (groupid=0): err= 0: pid=21546
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.0%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.4%, 50=13.9%, 100=33.9%
     lat (msec): 250=48.6%, 500=1.0%, 750=0.6%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21547
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.3%, 50=10.4%, 100=41.3%
     lat (msec): 250=46.4%, 500=1.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21548
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.9%, 8=95.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=8.1%, 100=45.7%
     lat (msec): 250=45.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3230/2678, merge=610/188, ticks=41912/38000, in_queue=79908, util=98.43%
0.22user 0.48system 0:21.68elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
362608inputs+251736outputs (0major+2464minor)pagefaults 0swaps