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VisualVM

VisualVM is a visual tool integrating several commandline JDK tools and lightweight profiling...

VisualVM Reviews and details

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  • VisualVM Landing page
    Landing page //
    2021-10-18

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Videos

Java Heap Dump Analysis - VisualVM Tutorial

OutOfMemoryError Java Heap Space Fix - Heap Dump Analysis VisualVM Tutorial

Social recommendations and mentions

We have tracked the following product recommendations or mentions on various public social media platforms and blogs. They can help you see what people think about VisualVM and what they use it for.
  • Can java collection be fixed?
    If you're curious, attach VisualVM and watch the RAM usage graph. You'll notice that Java performs garbage collections long before reaching allocating the maximum amount of RAM allocated, and you can't even feel any performance issue in-game. Source: 10 months ago
  • Items won't drop when either mined or dropped from inventory and new chunks won't load.
    Hangs and deadlocks are significantly harder to debug. A first step is taking a thread dump so you can see what each thread in the JVM is currently trying to do. I like VisualVM for this, you can also use the command-line tools jps -l (to list all Java PIDs) and jstack for taking a thread dump. Source: 10 months ago
  • Top metrics for Elasticsearch monitoring with Prometheus
    The Java VisualVM project is an advanced dashboard for Memory and CPU monitoring. It features advanced resource visualization, as well as process and thread utilization. - Source: dev.to / 11 months ago
  • Anybody know what causes this? Entities simply going idle, can't eat, fps is still high, can break blocks etc . I have a gtx 1660 ryzen 2600 and 16gb ram. So my pc isn't bad. I allocated 8gb of ram. Doesn't happen all the time . Happening on my modpack with 200 mods
    This sounds like a server thread freeze/deadlock/crash or something. I think I would start debugging this using a tool like VisualVM; attach it to the game, wait for the hang, take a thread dump, and check what the server thread is up to. Source: 12 months ago
  • Why use javafx
    Just wanted to chip in to say that /u/UtilFunction is correct. The proper way to measure memory consumption of any Java application independent of which garbage collector is used is to perform a heap dump (which automatically forces a complete garbage collection). I like to use VisualVM for that. Source: 12 months ago
  • Does the os control memory usage or the jvm tech (unstable memory use)
    It's the JVM that allocates and free's memory through GC depending on what the application needs or doesn't need at a time. The memory raising for a while and then getting freed can be normal behaviour for an application (saw-pattern). If you suspect a memory-leak you can monitor the application e.g. By connecting to it via VisualVM or JMC. You can manually kick-off a GC-cycle and see if it drops to a base-level... Source: about 1 year ago
  • Is there a fix for slow tick rate?
    My usual strategy in case of Minecraft performance problems is to look around the process with a Java profiler like VisualVM. That can tell you what the game is spending most of its CPU time on, and then you can make an informed decision on what's wrong. Source: about 1 year ago
  • Optimizing Decision Making with a Trie Tree-Based Rules Engine: An Experience Report
    I used SpringBoot 3.0.2, GraalVM 22 (JVM mode), a MacOS 2,6 GHz 6-Core Intel Core i7, running 1000 users for 5 minutes. The idea was to test how memory consumption and CPU usage evolve. Below, I compared the footprint of these three solutions. I collected the total count of requests, throughput, memory consumption, and CPU usage using VisualVM and Gatling. - Source: dev.to / about 1 year ago
  • A starting point to debug a Java OutOfMemoryError
    VisualVM (free tool maintained by Oracle). - Source: dev.to / about 1 year ago
  • Potential Fix for ToS Sluggishness
    Tuning the garbage collector often requires some trial and error. If you want to get more insight into what the garbage collector is doing and how the memory is being used you can use visualvm to monitor ToS. Source: about 1 year ago
  • Bulkhead pattern: semaphore vs threadPool
    After executing a load test that invokes for 60 seconds an @Aync and @Bulkhead annotated method, you can see from a profiling tool picture, that the application only used 34 out of 514 created threads. This obviously represents a waste of resources. - Source: dev.to / over 1 year ago
  • Making Code Faster
    > I had to pay real money to get the Java profiler I used at AWS and while it worked, it was klunky, not fun to use. VisualVM is quite good for Java/JVM profiling. - Source: Hacker News / almost 2 years ago
  • JVM. Garbage Collector
    Another common example would be clicking the Heap Dump button on the Monitor tab in VisualVM. - Source: dev.to / almost 2 years ago
  • Considerations when installing JDK in production servers instead of JRE
    Having said that, you can just install the specific tools that you want. For example you can just download jvisualvm here, which will give you profiling and JMX. In fact - for jvisualvm - if you specify the right RMI parameters on your app (as system properties) then you don't even need to put the software on the box: you can just connect remotely. Here's a guide on how to do that. Source: about 2 years ago
  • Debugging RAM: Detect/Fix Memory Leaks in Managed Languages - Heap Deep Dive, Part 2
    You can get VisualVM here. Once installed, you can launch VisualVM and connect it to our running application to see the process. - Source: dev.to / about 2 years ago
  • I found the perpetrator of the heavy CPU load: it seems to be that I use FXML or rather the FXMLLoader... but what now?
    How about you actually use a profiler and see what the culprit is: https://visualvm.github.io/. Source: over 2 years ago
  • Debugging Java Memory issues: Thread and Heap Dump Analysis
    VisualVM : A GUI Java profiling/analysis tool that can be used for Performance profiling (including per-thread analysis), Thread/Heap dumping, Monitoring. For JDK 8, this comes bundled as jvisualvm. For JDK 9, you will need to manually download it. - Source: dev.to / over 2 years ago
  • Common Lisp still beats Java, Rust, Julia, Dart in 2021 on benchmarks based on phone number encoding from the famous paper "Lisp as an alternative to Java" from 21 years ago
    If you really want to know what those threads are doing, I suggest you download jvisualvm (it's no longer part of the JDK release, but it still works very well) and attach it to the process. Source: over 2 years ago
  • How to get Thread dump from Heap dump
    VisualVM is a JVM troubleshooting tool, it was bundled with JDK 6,7,8 and is a standalone free tool. It can help you with JMX, profiling, memory monitoring, taking and displaying thread and heap dumps and so much more. If you do not have it on your local machine, download it and learn how to use it. I will definitely improve your troubleshooting capabilities. - Source: dev.to / over 2 years ago
  • How to reverse engineer java program?
    My suggestion to further understand how the application works would be that you use a tool such as VisualVM while jmeter is running. There you can start the cpu sampler and look for the main thread. Then you can see which methods are called on that thread. Source: almost 3 years ago
  • This keeps happening in my server after about 5 minutes. Does anybody know why? (Stoneblock 2 btw)
    For ingame builds, you can use Spark or VisualVM (external program). Apart from that, there's not much more I can suggest. Source: about 3 years ago

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This is an informative page about VisualVM. You can review and discuss the product here. The primary details have not been verified within the last quarter, and they might be outdated. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.