All OSes contain a kernel, which serves as the core set of instructions that all other operations and programs rely upon, and the fundamental nature of desktop kernels means that IT admins should ...

For a computer OS like Windows, the kernel is the essential foundation on which the OS rests, so it's critical for Windows administrators to understand its structure to inform their work. The kernel ...

The kernel's BPF virtual machine allows programs loaded from user space to be safely run in the kernel's context. That functionality would be of limited use, however, without the ability for those ...

Optimizing compilers can, under some circumstances, infer when a parameter to a function is not needed, and remove it. This is all well and good until the kernel's tracing or BPF subsystems need ...

Much of modern operating system functionality happens in and around the kernel. That’s a problem when you’re implementing monitoring and observability tools or adding low-level security tools because ...

BPF is a powerful component in the Linux kernel and the tools that make use of it are vastly varied and numerous. In this article we examine the general usefulness of BPF and guide you on a path ...

It used to be that building the Linux kernel was not easy. Testing and debugging were even worse. Nowadays, it is reasonably easy to build a custom kernel and test or debug it using virtualization.