What is the "SRE deep dive into Linux Page Cache" series about?

This article series provides an in-depth exploration of the Linux Page Cache, covering essential theory, practical tools, and advanced debugging techniques for Site Reliability Engineers. It aims to enhance understanding for tasks like capacity planning and troubleshooting memory/IO-bound applications.

Who is the target audience for this Linux Page Cache deep dive?

This deep dive is primarily for Site Reliability Engineers (SREs) and anyone with middle-level GNU/Linux knowledge and basic programming skills. It's designed to help them manage and debug memory and disk-intensive applications effectively.

How does this series differentiate itself from other Linux Page Cache resources?

The series distinguishes itself by focusing specifically on the SRE perspective, offering practical examples with Python, Go, and C code, and delving into the internals of observability utilities, syscalls, and kernel interfaces. It also covers cgroup v2 and systemd in relation to Page Cache management.

When would an SRE benefit from consulting this Linux Page Cache guide?

An SRE would benefit from this guide when needing to perform precise capacity planning, debug memory or disk-related issues in applications like databases or file storages, or when building predictable runtimes for IO-bound tasks such as backups. It's useful for both routine tasks and emergency debugging.

What specific tools or kernel interfaces does the series cover for Page Cache analysis?

The series covers tools like vmtouch, perf, cgtouch, strace, sar, and page-type. It also explores procfs files such as /proc/PID/smaps and /proc/pid/pagemap, sysfs files like /sys/kernel/mm/page_idle, and system calls including mincore(), mmap(), and posix_fadvise().

biriukov.dev · 29 DEC '22

SRE deep dive into Linux Page Cache

Item: SRE deep dive into Linux Page Cache
Rating: 5
Author: Simon Frey

This series offers a crucial SRE deep dive into Linux Page Cache. I find it essential for precise capacity planning, debugging memory/IO issues, and building reliable services, covering key tools and kernel interfaces.

Visit biriukov.dev →

Questions & Answers

What is the "SRE deep dive into Linux Page Cache" series about?: This article series provides an in-depth exploration of the Linux Page Cache, covering essential theory, practical tools, and advanced debugging techniques for Site Reliability Engineers. It aims to enhance understanding for tasks like capacity planning and troubleshooting memory/IO-bound applications.
Who is the target audience for this Linux Page Cache deep dive?: This deep dive is primarily for Site Reliability Engineers (SREs) and anyone with middle-level GNU/Linux knowledge and basic programming skills. It's designed to help them manage and debug memory and disk-intensive applications effectively.
How does this series differentiate itself from other Linux Page Cache resources?: The series distinguishes itself by focusing specifically on the SRE perspective, offering practical examples with Python, Go, and C code, and delving into the internals of observability utilities, syscalls, and kernel interfaces. It also covers cgroup v2 and systemd in relation to Page Cache management.
When would an SRE benefit from consulting this Linux Page Cache guide?: An SRE would benefit from this guide when needing to perform precise capacity planning, debug memory or disk-related issues in applications like databases or file storages, or when building predictable runtimes for IO-bound tasks such as backups. It's useful for both routine tasks and emergency debugging.
What specific tools or kernel interfaces does the series cover for Page Cache analysis?: The series covers tools like vmtouch, perf, cgtouch, strace, sar, and page-type. It also explores procfs files such as /proc/PID/smaps and /proc/pid/pagemap, sysfs files like /sys/kernel/mm/page_idle, and system calls including mincore(), mmap(), and posix_fadvise().