The heap is a larger region that stores everything that is allocated dynamically. The stack can be visually represented like a stack of books, where the books are actually functions and their context getting stored in the memory. Values can be stored in either the stack or the heap. To understand memory usage and potential leaks, you first need to understand what the heap and stack are. Memory Usage and Leaks Metrics for Node.js Pretty cool.įixing CPU intensive code is the first step to increase the performance and stability of your Node.js server. To avoid blocking this thread, you can spawn a child process to handle a CPU intensive task. An example would be that you have a web server that handles incoming requests. What you can do to lower CPU usage is to create child processes or forks to handle CPU intensive tasks. Most of the time you don’t need to worry about CPU loads. This is bad! By blocking the thread it also blocks asynchronous processes. If you are facing high CPU utilization, it may mean a lot of synchronous work is hogging the CPU and blocking the thread. The CPU does not have to wait for I/O requests, handling them asynchronously instead. However, having this in mind, Node.js applications rarely consume high amounts of CPU time. One instance of a Node.js application can only use one CPU core. The reason behind this is the runtime’s single thread of execution, meaning it’s bound to a single core of a CPU. I mentioned above that the Node.js runtime has limits regarding CPU thread utilization. Get Started CPU Usage Metrics for Node.js There are various metrics to explore and track, but which are important? This article will discuss the key metrics that are vital in analyzing your Node.js server’s performance.Ĭollect key Node.js metrics and get out of the box graphs and custom dashboards. It does have garbage collection, which is tightly coupled with both process memory and CPU usage. Node.js is at its essence a JavaScript runtime with limits regarding memory utilization and CPU thread usage. ![]() If you’re not careful this can lead to memory leaks. JavaScript is a dynamically typed language, where you let the interpreter assign types to variables. Nailing the performance just right with the V8 engine Node.js is built on is not at all as simple as one would think. Making Node.js applications quick and sturdy is a tricky task to get right. Node.js Monitoring Dashboard and Integrations.Node.js Cluster-Mode and Forking Worker Processes.Memory Usage and Leaks Metrics for Node.js.
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