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] [  8041/ 12466 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 12113/  7281 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 14571/  4896 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 11190/  7269 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 14687/  4116 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 12682/  5477 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11219/  5916 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  8423/  8069 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 11044/  2998 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  8122/  5701 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7289/  5519 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  8923/  3584 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [ 12523/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  7119/  4254 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5962/  4063 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5075/  3510 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6355/  1771 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21818, got signal=6
Threads: 2: [mm_] [64.5% done] [  5335/  2299 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21816, got signal=6
Threads: 1: [_m_] [65.6% done] [  4189/  2612 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21817, got signal=6

fio: (groupid=0): err= 0: pid=21816
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.0%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.3%, 20=1.9%, 50=9.3%, 100=48.1%
     lat (msec): 250=39.7%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21817
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=9.6%, 100=46.3%
     lat (msec): 250=41.8%, 500=0.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21818
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=9.3%, 100=51.1%
     lat (msec): 250=38.6%, 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=4056/2117, merge=569/95, ticks=48704/29032, in_queue=77724, util=98.81%
0.24user 0.40system 0:21.83elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
416344inputs+197816outputs (0major+2454minor)pagefaults 0swaps