[ros-users] Arm Core Performance

[Josh Faust]

>
> == NUM_PTS 1000 ==
>
> board               avg_ser     avg_deser
> intel i5             0.000011    0.000025
> arm1176jzf-s   0.001328    0.003354
>

Ok, so serialization is definitely much slower, but with the latency test
you're using it shouldn't affect anything.  Good to know though.


> == Latency Results ==
>
>                          IPC        NoTCP      Bypass
> intel i5           :   0.4ms     0.10ms     0.05ms
> arm1176jzf-s :   25.0ms   4.50ms     3.50ms
>
> ====== Raw Socket Tests ======
>
> Tests the latencies of sending a single char from server to client,
> written using simple posix socket code.
>
> intel i5           : 0.1ms
> arm1176jzf-s : 1.4ms


Do you have any way of profiling exactly what's taking time, either with
gprof, google perf tools, or something else?

Josh
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