memory

Allocating Huge Pages on Linux

If you build an application that uses large, contiguous amounts of memory, it can increase your performance if you allocate this memory in so-called huge pages. Linux offers you two ways of doing that - a legacy way and a modern way. This article describes the modern way of using huge pages, so called transparent huge pages (THP) and applies the techniques from a previous article to verify that we actually got huge pages. pages.

Published on Sep 11, 2023 13 min read

Analyzing your Program's Memory by Inspecting the Linux Page Table

When optimizing code for performance, it is often useful to have a very clear idea about what happens in memory. Reducing page faults, cache misses, TLB misses et cetera can be a major factor in speeding up your code. In this post I will demonstrate how you can inspect paging information regarding the memory of your process under Linux.

Published on Feb 6, 2023 12 min read