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] [ 15225/  3868 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 10656/  9420 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 15074/  5267 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 12682/  5617 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 14618/  3917 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  6924/ 10955 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11380/  5312 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  7996/  7253 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  3302/ 11226 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  6729/  7984 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8561/  6111 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8777/  2936 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 12971/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [ 10205/  1171 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  4075/  5099 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3730/  5343 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5275/  3083 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1198, got signal=6
Threads: 2: [m_m] [64.5% done] [  6874/   166 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1197, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1199, got signal=6

fio: (groupid=0): err= 0: pid=1197
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.0%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.3%, 20=2.5%, 50=8.2%, 100=38.6%
     lat (msec): 250=49.2%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1198
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.3%, 50=8.1%, 100=43.7%
     lat (msec): 250=46.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1199
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.5%, 8=92.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.0%, 50=11.4%, 100=35.6%
     lat (msec): 250=48.2%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3780/2154, merge=497/209, ticks=45592/32620, in_queue=78204, util=99.02%
0.35user 0.40system 0:21.40elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
396272inputs+217824outputs (0major+2456minor)pagefaults 0swaps