An investigation revealed performance issues in Ubuntu web servers caused by Linux kernel's cgroups v2 implementation, specifically related to inode switching between cgroups after file operations. The problem manifested as elevated system CPU usage and listen overflows, impacting web server performance during the first few minutes after host deployment.

https://dasl.cc/2025/01/01/debugging-our-new-linux-kernel/

#linuxkernel #performance #debugging #systemarchitecture #webservers