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] [ 15440/  8497 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [  9965/ 10421 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [20.8% done] [  8972/  8358 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 11658/  7826 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 13943/  3762 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 11307/  6902 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 18167/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 14039/  1759 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 10134/  5229 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 10266/  3022 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  6716/  6265 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  9623/  3180 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [ 10111/  1915 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8326/  2237 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4937/  4108 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  3762/  3790 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1137, got signal=6
Threads: 2: [m_m] [61.3% done] [  5320/  1740 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1138, got signal=6
Threads: 1: [m__] [64.5% done] [  7541/   174 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1136, got signal=6

fio: (groupid=0): err= 0: pid=1136
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.0%, 8=92.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.8%, 50=19.7%, 100=25.1%
     lat (msec): 250=51.5%, 500=1.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1137
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=8.7%, 100=64.3%
     lat (msec): 250=25.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1138
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.2%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=1.3%, 50=10.6%, 100=55.0%
     lat (msec): 250=31.9%, 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=3818/2021, merge=529/157, ticks=43960/27924, in_queue=71872, util=99.01%
0.17user 0.30system 0:21.36elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
422976inputs+191544outputs (0major+2457minor)pagefaults 0swaps