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] [  9224/  9195 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 14108/  6745 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 10494/  8716 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 12978/  7172 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 13563/  5083 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  9967/  8240 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 13637/  2954 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  9963/  4725 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 14384/  2238 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  8561/  4360 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  7403/  7358 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  4116/  7680 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  7866/  2698 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  4583/  6013 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  6172/  2803 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6558/  3181 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  3827/  3803 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6334, got signal=6
Threads: 2: [m_m] [62.5% done] [  7923/   910 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6333, got signal=6
Threads: 1: [__m] [67.7% done] [  7667/     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=6335, got signal=6

fio: (groupid=0): err= 0: pid=6333
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.3%, 50=7.8%, 100=51.4%
     lat (msec): 250=37.7%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6334
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.7%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=9.5%, 100=46.9%
     lat (msec): 250=40.7%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6335
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.6%, 4=7.2%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.8%, 20=3.3%, 50=12.6%, 100=39.8%
     lat (msec): 250=41.3%, 500=1.6%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3767/2251, merge=708/83, ticks=43796/36996, in_queue=80780, util=97.97%
0.27user 0.68system 0:22.06elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
392872inputs+221128outputs (0major+2454minor)pagefaults 0swaps