Linux Kernel Resource Isolation
TLDR: Linux kernel resource isolation refers to the mechanisms within the Linux Kernel that ensure processes or containers operate independently without impacting one another’s access to system resources like CPU, memory, disk I/O, and networking. Using technologies like cgroups and namespaces, the Linux Kernel enforces strict boundaries to manage resource allocation and ensure predictable performance, particularly in multi-tenant and containerized environments.
https://en.wikipedia.org/wiki/Resource_management_(computing)
Key components of Linux kernel resource isolation include cgroups (control groups), which manage resource quotas, priorities, and limits for processes, and namespaces, which create isolated environments for networking, process IDs, and file systems. These tools allow fine-grained control over how resources are distributed and accessed, enabling use cases like secure multi-user systems and container orchestration platforms such as Docker and Kubernetes. For example, CPU and memory limits prevent resource exhaustion by misbehaving applications, ensuring overall system stability.
https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/cgroups.txt
Advanced features like cgroups v2 enhance Linux kernel resource isolation by unifying the resource management hierarchy and improving usability. Additionally, live kernel updates and performance monitoring tools further support resource isolation in high-availability systems. These capabilities are essential in modern computing, where virtualized workloads and cloud environments demand robust, scalable resource management to handle diverse and dynamic demands effectively.
https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html