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] [13.0% done] [ 18120/  3441 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 11161/  8554 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 12414/  8094 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  3213/ 13284 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 15118/  4087 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 10717/  7443 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [39.1% done] [ 16367/  2944 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 14472/  2550 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 14565/  2416 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 14268/  1008 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 13614/  1175 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  5279/  6857 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [ 10319/  2220 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6463/  3571 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7386/  1260 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  1232/  5613 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24367, got signal=6
Threads: 2: [_mm] [63.3% done] [  3616/  4352 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24369, got signal=6
Threads: 1: [_m_] [66.7% done] [  8549/     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=24368, got signal=6

fio: (groupid=0): err= 0: pid=24367
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.6%, 8=93.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=10.0%, 100=58.7%
     lat (msec): 250=30.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24368
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=5.7%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=3.2%, 50=9.3%, 100=41.0%
     lat (msec): 250=44.5%, 500=1.0%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24369
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.1%, 50=11.3%, 100=42.2%
     lat (msec): 250=43.2%, 500=0.4%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4002/1968, merge=473/211, ticks=46372/30688, in_queue=77048, util=99.10%
0.25user 0.42system 0:20.79elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
419680inputs+194472outputs (0major+2450minor)pagefaults 0swaps