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] [ 15391/  4820 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [  9969/ 11238 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 19707/  1170 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 14809/  2713 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 17570/  1889 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 14704/  4571 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 14948/  1846 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9772/  6465 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  5125/  8248 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10778/  3941 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  6985/  5944 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  9265/  3705 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6137/  5210 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  3909/  6615 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  3453/  5169 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  1816/  7338 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  4921/  3001 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18223, got signal=6
Threads: 2: [m_m] [64.5% done] [  6564/  1326 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18224, got signal=6
Threads: 1: [m__] [65.6% done] [  4933/  2082 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18222, got signal=6

fio: (groupid=0): err= 0: pid=18222
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=5.1%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.1%, 20=1.1%, 50=10.9%, 100=35.4%
     lat (msec): 250=50.5%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18223
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.3%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.0%, 50=8.8%, 100=43.3%
     lat (msec): 250=45.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18224
  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=0.1%, 20=0.7%, 50=9.2%, 100=41.2%
     lat (msec): 250=47.6%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3725/2340, merge=523/173, ticks=46608/32872, in_queue=79472, util=98.39%
0.20user 0.53system 0:21.90elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
413936inputs+200248outputs (0major+2462minor)pagefaults 0swaps