Linux's memory management system is clear to the user. However, if you're not familiar with its working principles, you might meet unexpected performance issues. That's especially true for sophisticated software like databases. When databases are running in Linux, even small system variations might impact performance.
After an in-depth investigation, we found that Transparent Huge Page (THP), a Linux memory management feature, often slows down database performance. In this post, I'll describe how THP causes performance to fluctuate, the typical symptoms, and our recommended solutions.
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