#Systems
8 posts in tag “Systems”.
Learned Indexes: When Models Replace B‑Trees
2025-10-04A practitioner's guide to learned indexes: how they work, when they beat classic data structures, and what it takes to ship them without getting paged.
Memory Allocators: From malloc to Modern Arena Allocators
2023-09-14A deep dive into memory allocation strategies, from the classic malloc implementations to modern arena allocators, jemalloc, tcmalloc, and custom allocators that power high-performance systems.
Floating Point: How Computers Represent Real Numbers
2023-02-08A deep exploration of IEEE 754 floating point representation, the mathematics behind binary fractions, precision limits, and the subtle bugs that can arise when working with real numbers in code.
CPU Caches and Cache Coherence: The Memory Hierarchy That Makes Modern Computing Fast
2022-07-12A comprehensive exploration of how CPU caches bridge the processor-memory speed gap. Learn about cache architecture, replacement policies, coherence protocols, and how to write cache-friendly code for maximum performance.
Virtual Memory and Page Tables: How Modern Systems Manage Memory
2022-05-19A comprehensive exploration of virtual memory, page tables, and address translation. Learn how operating systems provide memory isolation, enable overcommitment, and optimize performance with TLBs and huge pages.
Compiler Optimizations: From Source Code to Fast Machine Code
2020-09-23A deep dive into how modern compilers transform your code into efficient machine code. Explore optimization passes from constant folding to loop vectorization, and learn how to write code that compilers can optimize effectively.
Hypervisor Internals: VT-x, AMD-V/SVM, Nested Paging, and the Mechanics of Trap-and-Emulate
2020-07-25A deep exploration of hardware virtualization support — how Intel VT-x and AMD-V enable efficient hypervisors through VM control structures, nested paging, and the clever elimination of slow trap-and-emulate paths.
Speculative Prefetchers: Designing Memory Systems That Read the Future
2019-02-14A field guide to building and validating speculative memory prefetchers that anticipate demand in modern CPUs and data platforms.