> I'm not sure why anyone would seriously propose it. Likely, cache line contention just probably never crosses their minds. I don't blame them. I'm largely

> I'm not sure why anyone would seriously propose it. Likely, cache line contention just probably never crosses their minds. I don't blame them. I'm largely self-taught. My degree is in mechanical engineering, and I did a bit of dabbling in kernel programming in college, and took a CPU design course, but I had been working in industry for more than 10 years before I had a decent mental model of cache coherency. There are just so many things to learn. I think few practitioners were exposed to or remember MESI or similar cache coherency protocols unless they've really done a lot of deep optimization in low-level languages or other languages with value types. Most of your GC languages (particularly those without value types) do so much pointer chasing that cache line contention may often get lost in the noise floor of cache line evictions.