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] [ 12210/  6756 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 11657/  9493 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [22.7% done] [ 10050/  9941 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  7911/  9497 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12600/  5587 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 12511/  3884 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11394/  5404 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  6024/  8342 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  6390/  6137 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 12422/  3713 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 12682/  2428 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  6833/  5230 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  8521/  3009 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [ 11812/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  6687/  3095 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6377/  2830 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  5238/  3131 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28179, got signal=6
Threads: 2: [mm_] [62.5% done] [  7476/     0 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28178, got signal=6
Threads: 1: [m__] [65.6% done] [  3579/  2957 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28177, got signal=6

fio: (groupid=0): err= 0: pid=28177
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.8%, 50=15.8%, 100=39.9%
     lat (msec): 250=41.5%, 500=1.0%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28178
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.5%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.5%, 20=1.2%, 50=10.0%, 100=41.6%
     lat (msec): 250=45.4%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28179
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=8.3%, 100=44.9%
     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=3857/2268, merge=628/150, ticks=47288/35628, in_queue=82920, util=99.21%
0.21user 0.54system 0:22.35elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
390608inputs+223280outputs (0major+2458minor)pagefaults 0swaps