Recently we experienced an interesting production problem. This application was running on multiple AWS EC2 instances behind Elastic Load Balancer. Continue reading “TCP: out of memory — consider tuning tcp_mem”
In this article, we have attempted to answer the most common questions around System.gc() API call. We hope it may be of help. Continue reading “All you need to know about System.gc()”
Should I be running my application with few instances (i.e. machines) with large memory size or a lot of instances with small memory size? Which strategy is optimal? This question might be confronted often. Continue reading “LARGE OR SMALL MEMORY SIZE FOR MY APP?”
JVM has provided helpful arguments to deal with OutOfMemoryError. In this article we would like to highlight those JVM arguments. Continue reading “OUTOFMEMORYERROR RELATED JVM ARGUMENTS”
Troubleshooting OutOfMemoryError or any memory related problem is done in manually even in 2019. Troubleshooting and identifying the root cause of OutOfMemoryError can even be automated, by following below mentioned 3 steps: Continue reading “AUTOMATING – OUTOFMEMORYERROR TROUBLESHOOTING”
There are a few distinct differences and subtle nuances between 32-bit JVM and 64-bit JVM. We thought we will try to clarify them through this question & answer article Continue reading “DOES 32-BIT OR 64-BIT JVM MATTER ANYMORE?”
Eclipse Memory Analyzer (MAT) is a powerful tool for heap dump analysis. It has several great features to debug memory problems effectively. Continue reading “ECLIPSE MAT – INCOMING REFERENCES, OUTGOING REFERENCES”
Eclipse MAT (Memory Analyzer Tool) is a powerful tool to analyze heap dumps. It comes quite handy when you are trying to debug memory related problems. In Eclipse MAT two types of object sizes are reported: Continue reading “SHALLOW HEAP, RETAINED HEAP”
Java.lang.VirtualMachineError is thrown when Java virtual machine encounters any internal error or resource limitation which prevents it from functioning. Continue reading “VIRTUAL MACHINE ERROR”
