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] [ 18050/  3124 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 12288/  7545 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 21788/     0 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 10571/  8244 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 13992/  3465 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  8936/  8098 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  6517/  9406 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  5847/  9638 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9164/  6882 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 11559/  2334 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 12226/  1635 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8005/  4864 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 10552/  1726 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5755/  5336 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  9204/  1313 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8143/   763 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5633/  3030 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  3202/  2820 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32320, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32321, got signal=6
Threads: 1: [__m] [65.6% done] [  3070/  3001 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32322, got signal=6

fio: (groupid=0): err= 0: pid=32320
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.7%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=1.0%, 50=8.5%, 100=46.9%
     lat (msec): 250=42.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32321
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.6%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.3%, 50=9.6%, 100=41.9%
     lat (msec): 250=46.4%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32322
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=6.1%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=2.2%, 50=7.7%, 100=36.4%
     lat (msec): 250=51.9%, 500=0.4%, 750=0.1%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3932/2129, merge=541/191, ticks=48916/32280, in_queue=81188, util=98.97%
0.22user 0.43system 0:21.73elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
411928inputs+202400outputs (0major+2461minor)pagefaults 0swaps