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A comment on Tiny Container Challenge: Building a 6kB Containerized HTTP Server. Parent comment

Re:Tiny Container Challenge: Building a 6kB Containerized HT... by Hackbraten on Thursday April 22, 2021 @11:28AM (#26903843)
UPX creates anonymous pages that contain the decompressed payload, right? Those aren’t file-backed pages so how would the filesystem even know those pages exist?
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Re:Tiny Container Challenge: Building a 6kB Containerized HT... by dividuum on Thursday April 22, 2021 @01:19PM (#26905275)
That’s correct and I guess only page deduplication might help in that case. What I meant in my post was just to state that docker can use the page cache despite the massive indirection caused by overlays. I was wondering if that was even possible and it indeed is.
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