The article explains why the initial memset on a newly‑allocated 1 GB buffer is much slower than subsequent calls, detailing how page‑fault handling, TLB misses, and the MMU’s multi‑level page tables cause overhead, and demonstrates optimizations such as using huge pages, MAP_POPULATE, and pre‑mapping to eliminate the slowdown.
This article examines how Linux page size, especially the use of huge pages (2 MB and 1 GB), influences database throughput by reducing TLB misses, presents benchmark results, and offers practical guidance for configuring Kubernetes nodes to leverage large pages for optimal database performance.
This article explains Linux huge pages, their performance benefits, implementation details, configuration steps, and the impact on memory reporting, including guidance on using and disabling Transparent Huge Pages for optimal system tuning.
This article explains common Linux memory‑related performance bottlenecks—such as memory reclamation, page‑cache pressure, huge‑page usage, and cross‑NUMA access—and provides practical tuning methods to improve latency and throughput on servers and applications.
This article explains the two types of Linux huge pages—static HugeTLB pages and dynamic Transparent Huge Pages—detailing their sizes, performance advantages, drawbacks, especially for Oracle workloads, and provides step‑by‑step instructions for checking status and permanently disabling THP via sysfs or GRUB.
This article explains the core principles of DPDK memory management, covering standard huge pages, NUMA node binding, direct memory access, IOMMU and IOVA addressing, custom allocators, and memory pools, and how these mechanisms together enable high‑performance packet processing on Linux systems.
This article summarizes essential concepts and practical optimization strategies for DPDK, covering architecture fundamentals, x86 performance analysis, virtualization overhead, NFV forwarding bottlenecks, huge‑page usage, polling modes, CPU affinity, and I/O virtualization techniques to achieve high‑throughput, low‑latency packet processing.
This article explains what huge pages are, why they can improve memory performance, provides step‑by‑step instructions to enable them for MySQL on CentOS, shows how to verify the configuration, and shares test results that reveal little performance gain.
This article explains the origins and mechanics of Huge Pages, why they are not a universal solution, how they can degrade performance on NUMA architectures, and provides practical testing methods and mitigation strategies for developers and system administrators.
