any good guides on how to set this up? not tutorials on ulimit, there's a man page, but I note 1024 is one of those very square numbers, and wonder if they need

any good guides on how to set this up? not tutorials on ulimit, there's a man page, but I note 1024 is one of those very square numbers, and wonder if they need to be power of two, or correlated to block size or blah blah.