Systems

Diagram of shared memory pages with copy-on-write arrows.

Deep Dive into Copy-on-Write Semantics in Modern Linux Kernels: Architecture, Implementation, and Real-World Patterns

A technical walkthrough of Linux’s copy‑on‑write mechanism, from page‑fault handling to real‑world deployment patterns.

Diagram of three overlapping circles labeled Utilization, Saturation, and Errors.

Implementing the USE Method: A Deep Dive into Utilization, Saturation, and Errors for Systems Performance

A practical guide that shows engineers how to instrument, interpret, and act on USE metrics across modern cloud stacks.

Diagram of epoll and io_uring data paths

Deep Dive into Linux I/O Evolution: From epoll Readiness to io_uring Completion Models

A detailed look at the shift from epoll to io_uring, covering design, performance, and migration strategies for production engineers.

Illustration of two memory semispaces with arrows indicating copying.

The Mechanical Reality of Cheney Semispace Copying

Discover how Cheney’s semispace copying algorithm works under the hood, why it matters for modern runtimes, and what pitfalls to avoid when implementing it.

Diagram of a B‑Tree node perfectly aligned with CPU cache lines.

Reclaiming Performance via Cache‑Aware B‑Tree Alignment

A deep dive into cache‑aware B‑Tree alignment, covering theory, practical implementation, and real‑world impact on database and filesystem performance.