VisualVM VS AppTimer

• Comprehensive Monitoring
  VisualVM allows developers to monitor and troubleshoot Java applications through various data points like JVM-level statistics, thread monitoring, and memory inspection.
• Integration with JDK
  As a part of the JDK, VisualVM is easy to access and use without the need for additional installations or configurations.
• Lightweight
  Being lightweight, VisualVM does not add significant overhead to the system and can be used effectively in development without impacting performance.
• User-friendly Interface
  VisualVM provides an intuitive and graphical interface that makes it easier for users to analyze the performance metrics and diagnose issues.
• Plugin Support
  VisualVM supports plugins, allowing users to extend its functionalities according to specific requirements and use cases.
• Cross-platform
  As a Java-based tool, VisualVM can be run on any platform that supports Java, making it highly versatile.

Possible disadvantages

• Limited to Java Applications
  VisualVM can only be used with Java applications, which can be a limitation for mixed-environment monitoring needs.
• Limited Features for Enterprise
  While excellent for basic monitoring, VisualVM might lack some features and scalability needed for large enterprise-grade monitoring and performance analysis.
• Steep Learning Curve for Advanced Features
  Despite its user-friendly interface, some advanced features and customizations can be complex and may require a steep learning curve.
• Infrequent Updates
  The update cycle for VisualVM can be slower compared to commercial alternatives, leading to potential lag in addressing bugs or adding new features.
• Resource Usage
  Running VisualVM for in-depth analysis on the same machine as the application it monitors could potentially affect the application’s performance due to resource consumption.

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Java Heap Dump Analysis - VisualVM Tutorial

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• Racket v9.0

  Java has the VisualVM. https://visualvm.github.io/ I would love a similar tool for Racket. - Source: Hacker News / 11 months ago

• Streaming data from RDBMS with jooq

  For the purposes of this demo, let’s simply count the number of retrieved rows. The Thread.sleep() is included to give me time to open VisualVM and check the metrics:. - Source: dev.to / about 5 years ago

• How to Monitor SQL Performance in Spring Boot

  To track query-level metrics, check out the Hibernate Statistics section. Profiling tools like YourKit or VisualVM can help you analyze key metrics such as:. - Source: dev.to / almost 2 years ago

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Tracking AppTimer since Mar 2021.