Page table is where Linux stores virtual to physical page address translation, and its size can get huge when memory usage is high. One way to reduce the size of page tables, and reduce the number of page faults, is to use huge pages. I’ve been digging some information on hugepages for my own curiosity, and it looks like Linux has pretty good support for huge pages. And this blog serves as a quick note on my readings.
Recently my colleague and I were working to port V8 JS engine as one of our benchmarks. We used it as it’s a widely-used library on devices we cared about, and we believed it’s a well-maintained, high code quality project. Or at least we thought.