A Garbage Collector is a Java program which tracked the referenced (live) objects and allowed them to keep in the heap memory whereas the memory of the unreferenced (dead) objects is reclaimed and reused for future object allocation. To understand it more practically we have to take some pictorial examples of JVM object creation and management cycle. Let’s … Read more
What is Memory Heap? Heap is a portion of memory which is used for dynamic allocation. The blocks of the memory in the heap are frequently allocated and freed based on the status of the object. The allocation and release of memory take place in an arbitrary order and hence the unreferenced or dead objects … Read more
A Garbage Collector is a Java program which tracked the referenced (live) objects and allowed them to keep in the heap memory whereas the memory of the unreferenced (dead) objects is reclaimed and reused for future object allocation. This method of reclaiming the unused memory is known as Garbage Collection. In Garbage collection, neither the explicit deletion … Read more
Before discussing the difference between agent-based and agent-less monitoring tool, let’s try to understand what is an agent? What is an agent? An agent is a proprietary software application installed on the server whose performance needs to be monitored. The agent resides at the server end and gathers the stats like CPU, Memory utilization etc. Then … Read more
To understand the difference between Physical and Logical CPU (core), you need to run the command lscpu on your Linux machine and you will get a result like this: Now, we will focus only on some important attributes, rest are not so much important with respect to this topic, so I will park them as of now. … Read more
The previous post explained about the software architecture and its types. Since each tier has different roles and operations hence the performance matrices are also different. Below is a list of certain mandatory performance metrics for each of the tiers which should be monitored during the performance test. Client Tier Since there is a need for better application performance … Read more