Java pretty much defeated the whole "the sky will fall if we deploy something with GC" nonsense. (Thank you, Java). What you're dealing with in this thread is twenty-year-old recycled FUD.
"Ruby proves its systems programming language as fast as C because i deployed an app on rented server i know nothing about"
I've taken a fair crack at it, but I'm unable to find an interpretation of your sentence such that it relates to my comment.
Your Apps (such as Java) are user-level programs. Its irrelevant if you can run Interpreted Brainfuck or Python on Crutches.
Read this comment:
https://news.ycombinator.com/item?id=14488427
These servers run C-based OSes where Java/.Net is just a server app.
I knew that.
But you ignore the whole stack the OS, Libraries, the Java runtime all are written in C/C++
only the end-user server app is written in Java code(that obviously means C/C++ is obsolete and Java is the systems language as fast as C/C++).
Why do you think I ignore that and what does this have to do with this discussion?