Using a Memory Profiler in Python & What It Can Teach You | Real Python Podcast
Have you used a memory profiler to gauge the performance of your Python application? Maybe you're using it to troubleshoot memory issues when loading a large data science project. What could running a profiler show you about a codebase you're learning? This week on the show, Pablo Galindo Salgado returns to talk about Memray, a powerful tracing memory profiler.
👉 Links from the show: https://realpython.com/podcasts/rpp/128/
Pablo developed Memray while working at Bloomberg to track memory allocations beyond Python code into native extensions and the interpreter itself. It's a compelling tool that provides fine-grain reports to help you understand where memory is used.
Pablo shares the reporting that Memray provides, including live mode, flame graphs, and a `pytest` plug-in. We also discuss how a tracing memory profiler can help you understand a new codebase.
He walks through how he developed the first prototype internally and eventually moved the project into open source. This is the first part of my conversation with Pablo. In a couple of weeks, you'll get the second part, where we talk about Python guilds inside large companies and his work as the release manager for Python 3.10 and 3.11.
Topics:
00:00:00 -- Introduction
00:02:48 -- When should you use a memory profiler?
00:05:13 -- Fine-grain reporting
00:13:17 -- Sampling profiler vs tracing profiler
00:19:46 -- Sponsor: Deepgram
00:20:31 -- What is a flame graph?
00:30:36 -- Using Rich for terminal reporters
00:40:08 -- Currently only Linux and macOS
00:41:13 -- `pytest` plug-in
00:42:03 -- Showing native allocation details
00:44:20 -- Video Course Spotlight
00:45:52 -- Using a profiler to learn a codebase
00:54:39 -- Moving from internal project to open source
01:02:17 -- Thanks and goodbye
👉 Links from the show: https://realpython.com/podcasts/rpp/128/
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