Cloud providers generally don't charge for RAM independently of other resources like CPU... and RAM isn't generally purchasable in 1GB increments.
Accordingly, shaving 1GB off all your runtimes won't save you much money.
There are more recently developed exceptions to that rule: container packing & FaaS offerings like AWS Lambda. Unsurprisingly, this has lead to the emergence of Java runtimes, frameworks, and libraries that are significantly more miserly with their use of memory (and are also designed for faster start up times as well).
That said, while a lot of people complain about their cloud bill, most places I've seen have payrolls and/or software licensing costs that make their cloud bill look like a rounding error. Sure, when you reach a certain size it is worth trying to squeeze out some extra ducats with greater efficiency, but more often than not, your efficiency concerns lie elsewhere.
Saying "no one tunes it" was deliberately overstating the case. If "everyone thinks the JVM needs 1GB just to run", then yes, "no one tunes it". Neither statement is true, but they both likely reflect some people's context.
Accordingly, shaving 1GB off all your runtimes won't save you much money.
There are more recently developed exceptions to that rule: container packing & FaaS offerings like AWS Lambda. Unsurprisingly, this has lead to the emergence of Java runtimes, frameworks, and libraries that are significantly more miserly with their use of memory (and are also designed for faster start up times as well).
That said, while a lot of people complain about their cloud bill, most places I've seen have payrolls and/or software licensing costs that make their cloud bill look like a rounding error. Sure, when you reach a certain size it is worth trying to squeeze out some extra ducats with greater efficiency, but more often than not, your efficiency concerns lie elsewhere.
Saying "no one tunes it" was deliberately overstating the case. If "everyone thinks the JVM needs 1GB just to run", then yes, "no one tunes it". Neither statement is true, but they both likely reflect some people's context.