VisualVM Reviews and Details

Is VisualVM good?

Social recommendations and mentions

• Racket v9.0

  Java has the VisualVM. https://visualvm.github.io/ I would love a similar tool for Racket. - Source: Hacker News / 8 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 / almost 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 / over 1 year ago

• 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: about 3 years 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: about 3 years 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 / about 3 years 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: over 3 years 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: over 3 years 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: over 3 years 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: over 3 years 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 / over 3 years ago

• A starting point to debug a Java OutOfMemoryError

  VisualVM (free tool maintained by Oracle). - Source: dev.to / over 3 years 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: over 3 years 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 / almost 4 years 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 / about 4 years ago

• JVM. Garbage Collector

  Another common example would be clicking the Heap Dump button on the Monitor tab in VisualVM. - Source: dev.to / about 4 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: over 4 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 / over 4 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: almost 5 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 / almost 5 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: almost 5 years ago