Search

Fast thread

Universal Java Thread Dump Analyzer

Category

Educational – Best Practises

JVM c1, c2 compiler thread – high CPU consumption?

c1, c2 compiler threads are created by Java virtual machine to optimize your application's performance. Occasionally these threads will tend to consume high CPU. In this post, let’s learn little more about c1, c2 compiler threads and how to address... Continue Reading →

Java class loading – performance impact!

java.lang.ClassLoader#loadClass() API is used by 3rd party libraries, JDBC Drivers, frameworks, application servers to load a java class into the memory. Application developers don’t use this API frequently. However when they use the APIs such as ‘java.lang.Class.forName()’ or ‘org.springframework.util.ClassUtils.forName()’, they... Continue Reading →

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... Continue Reading →

Performance impact of java.lang.System.getProperty()

'java.lang.System.getProperty()' is a common API used by Java developers to read the System properties that are configured during application startup time. i.e. when you pass "-DappName=buggyApp" as your application's startup JVM argument, the value of the 'appName' system property can... Continue Reading →

Java performance Talk in QAInsights Clubhouse

Naveen Kumar Namachivayam from QAInsights Invited Ram Lakshmanan - The architect of yCrash to talk in the Performance Engineers Clubhouse. In this video, the basics of Garbage collection, Importance of Memory, GC Throughput Introduction and many other topics have been... Continue Reading →

Video Blog: 7 JVM Arguments of Highly effective applications

You can pass 600+ arguments to JVM just around Garbage collection and memory. It’s way too many arguments for anyone to digest and comprehend. In all these 4 videos, 7 important JVM arguments that will boost your Java/Scala/Jython application performances... Continue Reading →

How Java program executed? – Heap, Threads, Stack, GC

What happens behind the scene when a java program is executed? In which regions objects are created? When objects become eligible for garbage collection? Where are threads stored? What is the difference between Stack and Heap? Watch this video to... Continue Reading →

Chaos Engineering – Simulating CPU Spike

In this series of chaos engineering articles, let's discuss how to simulate CPU consumption to spike up to 100% on a host (or container). CPU consumption will spike up whenever a thread goes on an infinite loop. Here is a... Continue Reading →

Java threads – may not be memory effecient?

Java applications tend to contain hundreds (sometimes thousands) of threads. The majority of these threads are in WAITING, TIMED_WAITING (i.e., dormant) state, while only a small portion of the threads are actively executing lines of code. So, we were curious... Continue Reading →

Powered by WordPress.com.

Up ↑