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How Do I Limit Memory Usage in Java

Sophia Al-Mansoor • • 8 min read
How Do I Limit Memory Usage in Java

Use -Xmx to specify the maximum heap size.Use -Xms to specify the initial Java heap size.Use -Xss to set the Java thread stack size.

How do I reduce Java memory usage?

  1. Maintain a consistent heap size allocation. Make -Xms equal to -Xmx.
  2. Reduce the amount of discarded objects (garbage) E.g. buffer less Kafka messages.
  3. A little bit GC goes a Long way.

Why does Java consume so much memory?

Java is also a very high-level Object-Oriented programming language (OOP) which means that while the application code itself is much easier to maintain, the objects that are instantiated will use that much more memory.

Sophia Al-Mansoor
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Sophia Al-Mansoor

Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.