The Dominator Tree shows that a large percentage of the heap comes from a Thread, when drilling down the School object, an ArrayList and a lot of long String objects are displayed. There are various Views available in Eclipse Jifa to further analyze the heapdump. Clicking the blue part of the ring displays the following overview: The jcmd command supplied by the JDK is one of the options to create the heap dump: jcmd GC.heap_dump Īfter adding the heap dump, it’s displayed on the page and clicking on analyze starts the analysis.Īfter the analysis is finished, an overview of the results is displayed. hprof file which contains the heap dump of a Java application. The starting page is displayed after browsing to After clicking on Add Heap Dump File, various options are presented to supply the heap dump file.
The online demo environment may be used to evaluate Eclipse Jifa, or alternatively, a Docker image may be used to quickly run Eclipse Jifa: docker run -p 8102:8102 jifadocker/jifa-worker:demo
The GC Log Analysis Service can process logs from Java 8 and 11, while support for Java 17 is under development. The analytic engine currently has two parts: the Heap Dump Analysis service based on Eclipse Memory Analyzer (MAT) and the GC Log Analysis service which supports the G1, Parallel GC, Serial GC, CMS and ZGC garbage collection algorithms. The Kubernetes scheduling solution uses the Kubernetes Java Client to create extra pods on demand based on the resource usage. There are several ways to deploy Eclipse Jifa: only one worker, one master and several workers or the Kubernetes model.
Based on the load, the Master(s) schedule extra Workers. The Master-Worker pattern is used which consists of one or more Master(s) that route requests from the browser to the managed set of workers who perform the analysis. Vue 2.0 and Vert.x are used for the frontend and backend, respectively. Currently, Heap Dump Analysis and GC Log Analysis are supported with features such as target heap overview, leak suspects, thread information and GC root analysis. Comparable solutions often run on the client, where Jifa provides a scalable, web-based solution to prevent local memory and resource challenges. Eclipse Jifa is an open-source project for troubleshooting Java applications.
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