Isuru's Blog

My first Hackernoon story was published today. The story is " Profiling Java Applications with Async Profiler " With " Async Profiler ", both system code paths and Java code paths can be profiled with the help of AsyncGetCallTrace (an internal HotSpot JVM API) and perf_events . Async profiler supports several types of profiling. For example, CPU profiling Allocation profiling Wall-clock profiling Lock profiling The Hackernoon story demonstrates few examples of using Async Profiler and generating Flame Graphs as the output.

When you are working with Java, it's always good to know how you can analyze Java Heap dumps with Eclipse Memory Analyzer Tool (MAT). Eclipse MAT is by far the best tool to analyze Java Heap Dumps. Please read my medium story on " Basic concepts of Java heap dump analysis with MAT " to understand basics of heap dump analysis with a sample Java application .

Recently, I encrypted my disks using LUKS (The Linux Unified Key Setup) specification and installed Ubuntu 19.04 on encrypted partitions. In my experience, I think that LUKS is currently the best and stable way to encrypt your data on Ubuntu. Read my medium story on how I enabled LUKS full disk encryption on selected partitions with step by step instructions (including screenshots) .