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this post was submitted on 07 Sep 2023
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Programming
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Citation needed :) I was surprised but I read (sorry I can't find the source again) that in most cases dynamic linking are loaded 1 time, and usually very few times. This make RAM gain much less obvious. In addition static linking allows inlining which itself allow aggressive constant propagation and dead code elimination, in addition to LTO. All of this decrease the binary size sometimes in non negligeable ways.
That is easily disproved on my system by
cat /proc/*/maps.Someone found the link to the article I was thinking about.
Ah, yes, I think I read Drew's post a few years ago. The message I take away from it is not that dynamic linking is without benefits, but merely that static linking isn't the end of the world (on systems like his).