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Emacs 28+ native compilation translates byte-compiled Elisp to machine code via libgccjit. This blog covers the problem it solves, how to enable it, a concrete benchmark showing 2× speedup on a regexp-heavy helper, and the trade-offs: larger cache, first-load latency, and dynamic-code fallbacks.
An architectural analysis of the Emacs C-core and Elisp interpreter, exploring the trade-offs between extreme extensibility and the risks of a single-threaded event loop.
Learn how to split Emacs configuration between early-init.el and init.el to remove startup flicker and speed up boot.
Emacs server mode lets a single daemon process host multiple emacsclient sessions that share one Lisp image, so reloading an application's source with load-file or eval-buffer updates function definitions for every connected client at once. The refresh, however, is not guaranteed to be complete: advice attached to a function, closures that captured an earlie
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