Speed up 'rostopic list'

asked 2017-03-29 08:31:04 -0600

Henrique Ribeiro gravatar image

Hey there,

I'm running ROS-Base Indigo (Bare Bones) on a low-power computer and I noticed that when I run rostopic list it takes ~5 seconds to answer. As expected, also rostopic pub take the same amount of time.

Of course, I know the problem is on the computational power of the cpu but my question is if there is any way to speed up rostopic commands with, for instance, some kind of cache.

Thanks in advance

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are you sure the lag is due to computer power and not due to a network issue?

Procópio gravatar image Procópio  ( 2017-03-31 03:31:54 -0600 )edit

How can I disambiguate? All the TCP connections seem to be fine.

Btw, the computer that I'm using has a AMD Geode LX-800 500MHz CPU with 512MB RAM.

Henrique Ribeiro gravatar image Henrique Ribeiro  ( 2017-03-31 04:45:26 -0600 )edit

are you physically connected to the low-power computer (keyboard and screen) or is it on your network and you are accessing it from another computer?

Procópio gravatar image Procópio  ( 2017-04-04 08:35:49 -0600 )edit

Yes, I'm physically connected to it.

Henrique Ribeiro gravatar image Henrique Ribeiro  ( 2017-04-04 08:56:57 -0600 )edit

have you found any solution to this? I am pretty sure it is some local network config on the ROS machine

Mehdi. gravatar image Mehdi.  ( 2022-10-19 07:34:05 -0600 )edit