[ros-users] rxplot bandwidth

[Ken Conley]

Right now, the answer to your question is no. There are some prototype
stat APIs embedded within roscpp and rospy, but they are not reliable
yet. We've been meaning to bring them online as "rostopic bw" only
prints *received bandwidth*, not published bandwidth (e.g. imagine
you're saturating your wifi). We don't yet have a timetable for this.

If you do end up writing a node, I suggest either looking at rosrecord
(C++) or rostopic (python) for how you can dig deep into the
roscpp/rospy APIs to minimize performance overhead, namely, turning
off costly deserialization of messages.

 - Ken

On Wed, Mar 17, 2010 at 9:57 AM, Dan Lazewatsky
<lazewatskyd at cse.wustl.edu> wrote:
> rostopic bw only prints bandwidth usage. I would like to be able to plot
> it with rxplot.
>
> On 3/17/10 11:54 AM, Miguel Prada wrote:
>> Hi Dan,
>>
>> I think you can get the bandwidth used by a topic using rostopic.
>>
>> rostopic bw /topic
>>
>> Regards,
>> Miguel
>>
>> El 17/03/2010, a las 17:47, Dan Lazewatsky escribió:
>>
>>
>>> Is there a way to get rxplot to plot the bandwidth used by a topic
>>> (without writing a node that calculates and publishes the bandwidth)?
>>>
>>> Thanks,
>>> -Dan
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