Table of contents Introduction The theory Measurements Implementation Meet the hardware Implementation details The code The results Conclusions Postscript IntroductionBACK TO TOC So many times I’ve heart people mentioning aligned memory access. I even protected memory alignment considerations when argued over some software design with my colleagues. I wanted to add few padding bytes into […]

Today I finished working on a new article called “SMP affinity and proper interrupt handling in Linux”. It describes a problem encountered by many system engineers and administrators and that is how to configure the system to properly handle interrupts. This article concludes a research that I did, those purpose was to find out what […]

Introduction Hardware interrupts has always been expensive. Somehow these small pieces of software consume so much CPU power and hardware and software engineers has always been trying to change this state of affairs. Some significant progress has been made. Still hardware interrupts consume lots of CPU power. You will rarely see effects of interrupt handling […]