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] [ 16501/  5218 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [  9932/  9835 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  5156/ 12869 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 10213/  7423 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.4% done] [ 11008/  7066 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  8354/  7435 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  8318/  6658 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  7272/  8545 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 11572/  3453 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10612/  3469 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 13532/  1793 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  8996/  4059 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  6524/  2692 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  7276/  2245 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4083/  4701 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7280/  2045 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  5548/  2818 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.5% done] [  5019/  2184 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13692, got signal=6
Threads: 2: [mm_] [63.6% done] [  3965/  3079 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13690, got signal=6
Threads: 1: [_m_] [66.7% done] [  5442/  1309 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13691, got signal=6

fio: (groupid=0): err= 0: pid=13690
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.0%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=11.5%, 100=30.4%
     lat (msec): 250=56.0%, 500=0.4%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13691
  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=0.1%, 10=0.1%, 20=1.4%, 50=11.3%, 100=30.5%
     lat (msec): 250=55.0%, 500=0.7%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13692
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.8%, 50=9.9%, 100=48.2%
     lat (msec): 250=40.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3815/2348, merge=405/326, ticks=46872/45028, in_queue=91900, util=99.19%
0.20user 0.43system 0:22.52elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
394592inputs+219240outputs (0major+2460minor)pagefaults 0swaps