I heard a lot of good things about mold and finally dove in after hitting some crippling compile times on a big rust project.<p>It barely made a difference, which was disappointing. Pretty much forgot about it after that but randomly tried it on a whim on a smaller project and the speedup was huge. After some rough testing going through most of my repo's it's very hit and miss with improvements but never was slower.<p>It's the only linker I use now. Not sure about C++ stuff but do investigate further if you aren't initially impressed, I've joined the fanclub.