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] [14.3% done] [  8761/ 12544 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 12987/  7533 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 20508/  1553 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [ 18023/  2977 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [33.3% done] [  9902/  8549 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [36.4% done] [  9457/  9294 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [40.9% done] [ 10213/  5796 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [43.5% done] [  8391/  7943 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [47.8% done] [  9827/  5393 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [50.0% done] [  8110/  5080 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [54.2% done] [ 10986/  3184 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [56.0% done] [ 11100/  2351 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [57.7% done] [  7305/  3953 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  4929/  5552 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.0% done] [  5438/  3188 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [64.3% done] [  6796/  1720 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3528, got signal=6
Threads: 2: [m_m] [63.3% done] [  7842/    20 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3529, got signal=6
Threads: 1: [m__] [66.7% done] [  7313/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3527, got signal=6

fio: (groupid=0): err= 0: pid=3527
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.6%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.7%, 50=9.0%, 100=41.0%
     lat (msec): 250=45.5%, 500=1.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3528
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.3%, 50=9.5%, 100=49.8%
     lat (msec): 250=38.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3529
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 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=1.4%, 50=7.2%, 100=46.6%
     lat (msec): 250=43.9%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3806/1621, merge=773/97, ticks=45440/24204, in_queue=69628, util=98.93%
0.22user 0.33system 0:20.57elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
436608inputs+177384outputs (0major+2451minor)pagefaults 0swaps