Rust Fast 1brc

• 1brc (1 Billion Row challenge) is simple problem with a 1000 Million cities and temperature to be colated averaged and sorted as fast as possible.
  • Obviously Rust is a good candidate as it is lowlevel and fast.
• Rust - file read speadup by order of magniture using unsafe mmap to map file directly into Ram.

  • https://docs.rs/memmap2/latest/memmap2/struct.Mmap

    • https://github.com/RazrFalcon/memmap2-rs