Would something like opt-in sharing of pages between processes that oracle has been trying to get into kernel be the correct option: https://lwn.net/ml/linux-ke

Would something like opt-in sharing of pages between processes that oracle has been trying to get into kernel be the correct option: https://lwn.net/ml/linux-kernel/cover.1682453344.git.khalid.aziz@oracle.com/ https://lwn.net/ml/linux-kernel/cover.1682453344.git.khalid.... Postmaster would just share the already shared memory between processes (containing also the locks). That explicit part of memory would opt-in to thread -like sharing and thus get faster/less tlb switching and lower memory usage. While all the rest of the state would still be per-process and safe. tl;dr super share the existing shared memory area with kernel patch All operating systems not supporting it would keep working as is.