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4 cards from this section. Quick, good the night before a test.
What does the -Xms flag do in JVM tuning?
Think about how you would define the heap size when starting an application.
Explain the purpose of garbage collection.
Consider what happens when an object goes out of scope.
What does the -Xmx option control?
Remember what happens when your application runs out of memory!
The G1 garbage collector is suitable for which type of application workload?
Think about when predictable performance is critical.
You are running a large-scale application that experiences frequent garbage collection pauses. Propose a step-by-step tuning strategy to reduce these pauses.
Start by examining logs and then adjust tuning parameters accordingly.
A web application is facing slow load times due to JIT compilation delays. What are some adjustments you could make to improve JIT performance?
Think about how frequently executed methods can be prioritized.
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