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] [8.1% done] [ 17933/  4775 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [12.5% done] [ 19621/  3225 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [16.1% done] [ 13630/  6398 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.7% done] [ 13553/  7655 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [24.1% done] [ 15887/  4392 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [28.6% done] [  8635/  9241 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [31.0% done] [  8814/  7447 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [34.5% done] [ 11759/  4750 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [36.7% done] [ 10075/  5409 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [40.0% done] [  9156/  6581 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [43.3% done] [  9208/  6003 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [46.7% done] [  7191/  5792 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [48.4% done] [  8558/  4018 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [51.6% done] [  7102/  5014 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [54.8% done] [  7577/  3538 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.2% done] [  7122/  3209 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [57.6% done] [  5515/  2525 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27901, got signal=6
Threads: 2: [mm_] [58.8% done] [  6101/  2448 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27900, got signal=6
Threads: 1: [m__] [63.6% done] [  1435/  5572 kb/s] [eta 00m:12s]
Threads: 1: [m__] [66.7% done] [     0/  6056 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27899, got signal=6

fio: (groupid=0): err= 0: pid=27899
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.6%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.2%, 20=0.5%, 50=24.9%, 100=20.2%
     lat (msec): 250=51.3%, 500=1.7%, 750=0.1%, 1000=0.0%, >=2000=0.5%
fio: (groupid=0): err= 0: pid=27900
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=8.1%, 8=91.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.4%, 50=10.1%, 100=56.2%
     lat (msec): 250=29.3%, 500=0.9%, 750=0.4%, 1000=0.1%, >=2000=0.3%
fio: (groupid=0): err= 0: pid=27901
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=10.1%, 100=50.0%
     lat (msec): 250=38.5%, 500=0.2%, 750=0.2%, 1000=0.1%, >=2000=0.3%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3358/3212, merge=625/4553, ticks=44044/235332, in_queue=270232, util=99.90%
0.49user 0.41system 0:22.73elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
397048inputs+217272outputs (0major+2465minor)pagefaults 0swaps