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] [9.7% done] [ 14899/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [12.9% done] [ 13752/   878 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [17.2% done] [  9668/  5047 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [20.0% done] [ 11170/  2560 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [22.6% done] [  9099/  6390 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [25.8% done] [  7130/  8427 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [29.0% done] [ 11077/  4510 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [33.3% done] [ 13003/  4165 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [36.7% done] [ 16546/  2921 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [41.4% done] [ 14207/  3912 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [44.8% done] [  7850/  8610 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.7% done] [  7423/  5637 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [50.0% done] [  9249/  3180 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [51.6% done] [ 12153/   792 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [54.8% done] [  8460/  3184 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.2% done] [  8208/  3136 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [59.4% done] [  9293/  1048 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.6% done] [  4657/  4246 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25073, got signal=6
Threads: 2: [m_m] [61.8% done] [  7590/   459 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25072, got signal=6
Threads: 1: [__m] [64.7% done] [  4616/  2086 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25074, got signal=6

fio: (groupid=0): err= 0: pid=25072
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.1%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=1.0%, 50=13.5%, 100=52.9%
     lat (msec): 250=19.3%, 500=12.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25073
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.9%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.7%, 50=15.9%, 100=55.5%
     lat (msec): 250=14.1%, 500=12.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25074
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.2%, 8=92.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=2.9%, 50=16.7%, 100=39.6%
     lat (msec): 250=27.2%, 500=12.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4196/1756, merge=585/236, ticks=57068/30516, in_queue=87584, util=99.11%
0.48user 0.47system 0:23.35elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
431760inputs+182592outputs (0major+2463minor)pagefaults 0swaps