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] [8.6% done] [ 11633/  4311 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.4% done] [  4311/ 11690 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.7% done] [  9416/  7240 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [18.8% done] [  8545/ 10608 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [21.9% done] [  6642/ 11901 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [25.8% done] [ 13849/  4327 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [30.0% done] [ 12475/  5800 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [33.3% done] [ 13475/  4067 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [36.7% done] [  3343/ 11860 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [40.0% done] [  2599/ 12288 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [41.9% done] [ 11254/  3721 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [46.7% done] [  5820/  8964 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [48.4% done] [  8785/  4132 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [51.6% done] [  5031/  7240 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [53.1% done] [  3880/  6593 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [54.5% done] [  5177/  4783 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [57.6% done] [  8977/  1212 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [58.8% done] [  4641/  3119 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21511, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21512, got signal=6
Threads: 1: [m__] [60.0% done] [  7533/   357 kb/s] [eta 00m:14s]
Threads: 1: [m__] [64.7% done] [  3965/  3689 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21510, got signal=6

fio: (groupid=0): err= 0: pid=21510
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.3%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.4%, 50=23.7%, 100=19.5%
     lat (msec): 250=45.9%, 500=7.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21511
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=8.2%, 100=53.5%
     lat (msec): 250=31.0%, 500=5.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21512
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 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=0.9%, 50=11.3%, 100=48.3%
     lat (msec): 250=33.3%, 500=6.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3226/2802, merge=433/383, ticks=39600/54940, in_queue=94532, util=98.30%
0.33user 0.50system 0:23.02elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
331008inputs+283248outputs (0major+2466minor)pagefaults 0swaps