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] [ 12413/  9723 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [  8301/ 10364 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [22.7% done] [  7403/ 12084 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [  6715/ 14203 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 10780/  6936 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 12210/  4726 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 15326/  3026 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  8618/  7107 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  9652/  5478 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 14578/     0 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 12182/  1871 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8789/  3982 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [ 12218/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [ 11624/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5518/  3088 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  3835/  4405 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [65.5% done] [  5206/  2570 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27780, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27779, got signal=6
Threads: 1: [__m] [64.5% done] [  7061/   581 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27781, got signal=6

fio: (groupid=0): err= 0: pid=27779
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.5%, 50=7.5%, 100=47.9%
     lat (msec): 250=42.2%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27780
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.1%, 50=7.5%, 100=48.0%
     lat (msec): 250=41.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27781
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.1%, 50=9.1%, 100=46.0%
     lat (msec): 250=42.4%, 500=0.3%, 750=0.4%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3852/1971, merge=628/215, ticks=44804/29156, in_queue=73948, util=99.06%
0.26user 0.33system 0:21.10elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
403376inputs+210704outputs (0major+2456minor)pagefaults 0swaps