3/18/2023 0 Comments Jprofiler limit hotspots![]() ![]() At this time, it is necessary to rely on the full link tracking function provided by distributed tracking systems such as Jaeger, ARMS, and SkyWalking. ![]() However, as the modern system architecture gradually shifts from a single unit to a distributed, micro-service, simply using the above tools is often unable to meet the demand. If you only need to diagnose the performance bottleneck of a stand-alone Java application, the diagnostic tools described above are sufficient. JProfiler supports integrated analysis of these subsystems.ĭistributed application performance diagnosis For example, for JDBC calls, you may want to find the slowest SQL statement. Advanced subsystem-Many performance problems occur at a higher semantic level.Threads and locks-JProfiler provides multiple analysis views for threads and locks to help you discover multithreading problems.Memory allocation-By analyzing objects on the heap, reference chains and garbage collection, it can help you fix memory leaks and optimize memory usage.Method calls-The analysis of method calls can help you understand what the application is doing and find ways to improve its performance.JProfiler is a Java application performance diagnostic tool developed by ej-technologies company. In addition, it can visually display the number and size of each object in the Java heap, the number of calls and execution time of each Java method, etc. It obtains analysis data of the target JVM through JMX, jstatd, Attach API, etc., including CPU usage, memory usage, thread stack information, etc. JVisualvm is a visual performance diagnostic tool built into the JDK. The following introduces several graphical comprehensive performance diagnostic tools. The analysis data is output through the terminal, and the result display is not intuitive enough.It is not very convenient to require users to log in to the host where the target Java application is located.(this is essential to locate application performance bottlenecks). Unable to obtain method-level analysis data, such as the calling relationship between methods, the number of calls and the calling time of each method, etc.Using the above command line tools or combinations can help you obtain basic information about the performance of the target Java application, but they have the following limitations: jcmd-A tool with more comprehensive functions than jstat, which can be used to obtain the performance statistics, JFR, memory usage, garbage collection, thread stack, JVM running time and other information of the target Java process.jstat-A lightweight and multifunctional monitoring tool that can be used to obtain information about class loading, JIT compilation, garbage collection, memory usage, etc.jmap-used to obtain memory-related information of the target Java process, including the usage of each area of the Java heap, statistical information of objects in the heap, class loading information, etc. ![]()
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