JVM Memory has following regions:
a. Young Generation
b. Old Generation
c. Metaspace
d. Others region
Continue reading “Inspect the contents of the Java Metaspace region”Inspect the contents of the Java Metaspace region
Java String intern: Performance impact
java.lang.String#intern() is an interesting function in Java. When used at the right place, it has potential to reduce overall memory consumption of your application by eliminating duplicate strings in your application. To learn how intern() function works, you may refer to this blog. In this post let’s discuss the performance impact of using java.lang.String#intern() function in your application.
Continue reading “Java String intern: Performance impact”Java String intern(): Interesting Q & A
intern() is an interesting function in java.lang.String object. intern() function eliminates duplicate string objects from the application and has potential to reduce overall memory consumption of your application. In this post, let’s learn more about this intern() function.
Continue reading “Java String intern(): Interesting Q & A”Java Hashtable, HashMap, ConcurrentHashMap – Performance impact
There are a good number of articles that articulate functional differences between HashMap, HashTable and ConcurrentHashMap. This post compares the performance behavior of these data structures through practical examples. If you don’t have patience to read the entire post, here is bottom line: When you confront with the decision of whether to use HashMap or HashTable or ConcurrentHashMap, you can consider using ConcurrentHashMap since it’s thread-safe implementation, without compromise in performance.
Continue reading “Java Hashtable, HashMap, ConcurrentHashMap – Performance impact”Benefits of setting initial and maximum memory size to the same value
When we launch applications, we specify the initial memory size and maximum memory size. For the applications that run on JVM (Java Virtual Machine), initial and maximum memory size is specified through ‘-Xms’ and ‘-Xmx’ arguments. If Java applications are running on containers, it’s specified through ‘-XX: InitialRAMPercentage’ and ‘-XX: MaxRAMPercentage’ arguments. Most enterprises set the initial memory size to a lower value than the maximum memory size. As opposed to this commonly accepted practice, setting the initial memory size the same as the maximum memory size has certain ‘cool’ advantages. Let’s discuss them in this post.
Continue reading “Benefits of setting initial and maximum memory size to the same value”Let’s crash the applications! – Confoo 2022
ConFoo Montreal is a multi-technology conference for developers. This year , they have conducted the program to exchange knowledge and ideas from speakers all over the world. Our Architect Ram Lakshmanan was invited to give a talk on the topic: “Let’s crash the applications!”
Continue reading “Let’s crash the applications! – Confoo 2022”16 artifacts to capture when there is a production problem -Montreal 2022
ConFoo Montreal is a multi-technology conference for developers. Our Architect Ram Lakshmanan has been invited there to present on the topic “16 artifacts to capture when there is a production problem“, which has secured 5th place among 155 sessions.
Continue reading “16 artifacts to capture when there is a production problem -Montreal 2022”Let’s crash the applications! – W-JAX 2021
JAX – Online conference is the meeting place for all Java and software architecture enthusiasts! This year also, they have conducted an online conference to exchange knowledge and ideas from speakers all over the world.
Continue reading “Let’s crash the applications! – W-JAX 2021”7 habits of highly effective Performance Troubleshooters! – All Day Devops Conference
The World’s Largest 6th Annual All Day DevOps conference held on October 28th 2021. Our architect Ram Lakshmanan was invited there to present a webinar on the topic 7 habits of highly effective Performance Troubleshooters!
Below is the deck shared in the conference which explains, how to forecast the problems?, what to do when the problem is happening?, how to identify the root cause instantly? and how to prevent problems from happening in the future and so on.
Continue reading “7 habits of highly effective Performance Troubleshooters! – All Day Devops Conference”OutOfMemoryError: Kill process or sacrifice child – causes & solutions
There are different flavors of OutOfMemoryError. One of the flavours of OutOfMemoryError is ‘Kill Process or sacrifice child’. This post discusses what triggers this ‘Kill Process or sacrifice child’ OutOfMemoryError and potential solutions to diagnose this problem.
Continue reading “OutOfMemoryError: Kill process or sacrifice child – causes & solutions”
HeapHero – Java & Android Heap Dump Analyzer 