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You're reading from  Java Coding Problems - Second Edition

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Published inMar 2024
PublisherPackt
ISBN-139781837633944
Edition2nd Edition
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Anghel Leonard
Anghel Leonard
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Anghel Leonard

Anghel Leonard is a Chief Technology Strategist and independent consultant with 20+ years of experience in the Java ecosystem. In daily work, he is focused on architecting and developing Java distributed applications that empower robust architectures, clean code, and high-performance. Also passionate about coaching, mentoring and technical leadership. He is the author of several books, videos and dozens of articles related to Java technologies.
Read more about Anghel Leonard

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224. Observing and monitoring virtual threads

Observing and monitoring virtual threads can be done in several ways. First, we can use Java Flight Recorder (JFR) – we introduced this tool in Chapter 6, Problem 143.

Using JFR

Among its reach list of events, JFR can monitor and record the following events related to virtual threads:

  • jdk.VirtualThreadStart – this event is recorded when a virtual thread starts (by default, it is disabled)
  • jdk.VirtualThreadEnd – this event is recorded when a virtual thread ends (by default, it is disabled)
  • jdk.VirtualThreadPinned – this event is recorded when a virtual thread is parked while pinned (by default, it is enabled with a threshold of 20 ms)
  • jdk.VirtualThreadSubmitFailed – this event is recorded if a virtual thread cannot be started or unparked (by default, it is enabled)

You can find all the JFR events at https://sap.github.io/SapMachine/jfrevents/.

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Java Coding Problems - Second Edition
Published in: Mar 2024Publisher: PacktISBN-13: 9781837633944
© 2024 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Anghel Leonard

Anghel Leonard is a Chief Technology Strategist and independent consultant with 20+ years of experience in the Java ecosystem. In daily work, he is focused on architecting and developing Java distributed applications that empower robust architectures, clean code, and high-performance. Also passionate about coaching, mentoring and technical leadership. He is the author of several books, videos and dozens of articles related to Java technologies.
Read more about Anghel Leonard

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