Similar problem here.
It's a bit hard to create a MRE for this sort of thing. It happens only after working with the same RMD file for a while, say running a few chunks multiple times. Suddenly, my rsession process is using 13G of ram even though my data objects are nowhere near that--the bighgest maybe 1M. (gc shows less than 1G)
I finally realized that if I use the knitr dropdown to clear the knitr cache, it clears the rsession memory. But if I forget to do that frequenty, then I need to manually kill the rsession, hopefully not lose recent file changes, and re-run the RMD file.
Is there a way I could have a command I use periodically in the file to perform that same operation?
Alternatively, can someone help me understand how I accumulate two orders of magnitude more memory in my rsession than the data structures I have going in my session?
