Practice Heap Sizing (10.6.1) - JVM Internals and Performance Tuning

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8 questions

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6 sample questions

Question 1.
What does the -Xms parameter signify?
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Think of it as what the JVM starts with.
Question 2.
Name a tool used for monitoring Java heap?
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It's a monitoring tool that comes with the JDK.
3Question 3.
What does the -Xmx parameter represent?
- Initial heap size
- Maximum heap size
- Current heap size
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Think about the limits on memory.
4Question 4.
True or False: Monitoring heap usage is not necessary if you set -Xms and -Xmx correctly.
- True
- False
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How dynamic are applications?
Question 5.
Your application initially runs with -Xms1g and -Xmx4g but starts facing OutOfMemoryErrors under high load. What would be your troubleshooting steps?
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Consider what maximum your application's requirements would be under expected load.
Question 6.
After using VisualVM, you notice that your heap usage consistently reaches 95% during peak operations. What actions should you consider taking?
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How might you predict future usage?

4 more questions in this section. Enroll free to practise them all.