A recruiter or sourcer? In most cases (and I am generalizing here) basically a pattern-matching robot, so the same treatment as your CV. Have words and phrases they're looking for? Great! No? Meh.
Someone besides a recruiter? Might give it a glance out of curiosity and for conversation starter material, but if they're overly concerned about what's there or how much is there - you didn't want to work for/with them anyway. Honestly, most people that have been in the industry for any time at all quickly run out of free time and motivation for this stuff, and their github profiles will be rather barren as a result (unless they work at a company that publishes open source software, of course... but that's the exception not the rule).