@wjwwood Thank you for the continuing help.

I ran the 'talker' example from the 'lastSuccessfulBuild' link that you sent. The virtual memory usage is still in the hundreds of megabytes range. Screenshot is attached.

tco       7359  0.0  0.1 323340 10756 pts/0    Sl+  16:24   0:00 bin/talker

Are you aware of any fixed-sized buffer allocations that would account for the ~323 Megs used for this simple example?

<img src="/uploads/ros/original/1X/fe2029756f23819fd07877ac4ed363d07961f375.png" width="690" height="280">

nm.






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