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] [14.3% done] [ 17848/  4783 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [  9904/ 10844 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 13300/  6068 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 14234/  6152 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [  6491/ 10876 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [  5129/ 12743 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  5495/ 10461 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 11909/  2591 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 13406/  1810 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12873/  2200 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11995/  3315 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  5621/  6044 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  7866/  3636 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [ 10266/  1846 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6284/  2391 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7663/  1439 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6695/  1452 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10424, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10423, got signal=6
Threads: 1: [m__] [64.5% done] [  4648/  1991 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10422, got signal=6

fio: (groupid=0): err= 0: pid=10422
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 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=0.2%, 20=1.4%, 50=10.3%, 100=43.5%
     lat (msec): 250=43.2%, 500=0.5%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10423
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.2%, 50=8.6%, 100=48.7%
     lat (msec): 250=41.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10424
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=7.4%, 8=92.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=2.4%, 50=7.6%, 100=47.6%
     lat (msec): 250=41.8%, 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=3757/2025, merge=780/181, ticks=44568/28468, in_queue=73032, util=99.14%
0.54user 0.35system 0:21.08elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
404488inputs+209752outputs (0major+2453minor)pagefaults 0swaps