[ros-users] Transport statistics?

[Ken Conley]

On Wed, Oct 26, 2011 at 11:08 AM, Lorenzo Riano <lorenzo.riano at gmail.com> wrote:
> Maybe this is slightly off topic, but it might be very useful to know the
> bandwidth usage of a single node, or even better if this bandwidth is split
> among topics/services (advanced feature?). This could be done e.g. by
> inserting a proxy node between the sender and the receiver, but other ways
> are possible.

The C++ and Python client library have hooks for this information, but
the API was never fully developed. It might be possible to get this
fully developed, though the APIs are not much use w/o a tool to
visualize such info (part of the reason it was never fully baked).

 - Ken

> Lorenzo
>
>
> On 26 October 2011 18:56, Armstrong-Crews, Nicholas - 0447 - MITLL
> <nickarmstrongcrews at ll.mit.edu> wrote:
>>
>> Hi Cem,
>>
>> We're working on network health monitoring for inclusion in the next
>> release (Fuerte). ("we" being the ROS SIGs for IPC and multirobot)
>>
>> It would be helpful to know more about your use case: what transport
>> statistics you think would be useful, and what nodes would modify behavior
>> as a result.
>>
>> Thanks!
>> -Nick
>>
>> -----Original Message-----
>> From: ros-users-bounces at code.ros.org
>> [mailto:ros-users-bounces at code.ros.org] On Behalf Of Karan, Cem F USA CIV
>> (US)
>> Sent: Tuesday, October 25, 2011 12:04 PM
>> To: ros-users at code.ros.org
>> Subject: [ros-users] Transport statistics?
>>
>> Does ROS have a built-in API that collects running transport statistics? I
>> want to know how many messages are lost as a proxy for the quality of the
>> communications link, so I can adapt to worsening communications conditions.
>>  I'd like it if the API was available in Python, but I can work on top of
>> C++ if necessary.
>>
>> Thanks,
>> Cem Karan
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>
>
>
> --
> Lorenzo Riano, PhD
> Research Associate
> Intelligent Systems Research Centre
> University of Ulster
> Magee campus
> Londonderry
> BT48 7JL
>
> phone: +44 (0)28 71375187
> email: l.riano at ulster.ac.uk, lorenzo.riano at gmail.com
> skype: lorenzo.riano
>
> Webpage: http://isrc.ulster.ac.uk/Staff/LRiano/Contact.html
>
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