From the course: Java Concurrency Troubleshooting: Latency and Throughput

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Identify blocked threads in thread dumps

Identify blocked threads in thread dumps - Java Tutorial

From the course: Java Concurrency Troubleshooting: Latency and Throughput

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Identify blocked threads in thread dumps

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- [Teacher] So you've captured a couple of thread dumps. Remember, one thread dump, usually isn't any good, but now what? Your department is looking at you to figure out why loading a page is taking a long time or something. First, you'll need to understand some of the key pieces of information in a thread dump. So, in the thread dump, you can find the name of the thread, it's ID, it's daemon status, the thread ID according to the operating system which is separate from its ID within the JVM, it status, the timing parameter that has the CPU and the elapsed time. Fun fact, this was contributed to the OpenJDK by the group over at SAP. So how can you use this to troubleshoot a thread dump? At the most basic level, you want to be sure that the word blocked isn't anywhere in any of the thread dumps you have. Here's why. Threads in Java have a couple of statuses, but for the purposes of troubleshooting latency and…

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