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Table Of Contents
Hands-On Automated Testing with Playwright
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When using Playwright, it’s easy to run into invisible resource bottlenecks if you’re not careful like launching dozens of browser instances at once, leaking pages/contexts, or loading heavy assets when you don’t need to. Let’s look at the most common pain points and practical strategies for managing CPU, memory, and I/O.
The first step to avoiding performance issues is knowing where they usually start. In Playwright, a common pitfall is launching too many browser instances. Every time you call browser.launch(), it spins up a brand-new process (Chromium, Firefox, or WebKit), which uses CPU power and memory.The same goes for opening lots of contexts or pages. Each new context creates its own browser profile on disk and takes up memory to handle rendering and JavaScript execution. If your scripts or tests are constantly creating and closing browsers or contexts without limits,...