This is a solid guide but might benefit from explaining why these parameters can be important. I bet if you asked 100 people who considered themselves professional Linux sysadmins to explain softirq squeeze, you will get blank stares. But squeeze is in fact an important indicator of system overload, despite its complete obscurity.
I think the mere word "squeeze" might be unfamiliar. But if you were to describe what "squeeze" summarizes then perhaps you might not get as many blank stares.
I'd never heard of squeeze before. But after reading it, I think I've got the gist of the performance implications.
