Fei has over 10 years of development experience at Tencent and Sogou. Through this account, he shares his deep insights on performance.
This article explains how the SIGPIPE signal is generated in Linux, why it can cause Go‑Rust services to crash without a core dump, and how to prevent it by configuring the signal handler to ignore SIGPIPE.
netcap is an open‑source eBPF‑driven kernel network packet capture tool that extends tcpdump syntax to trace skb‑related functions across the Linux network stack, offering detailed packet tracing, customizable filters, multi‑trace aggregation, and user‑defined output to improve debugging of packet loss and performance issues.
This article introduces the rapid rise of large language models, highlights the advantages of the GLM-4-Plus model—including superior language understanding, long‑text handling, and enhanced reasoning—explains how to obtain API credentials, demonstrates request parameters and curl examples, and showcases diverse real‑world use cases such as code generation, social‑media copy, travel planning, and interview question creation.
This guide introduces CodeVideoX, a diffusion‑transformer based video generation model, explains its training and inference pipelines, and provides step‑by‑step instructions with API endpoints, required parameters, and example cURL commands for creating short AI‑generated videos.
This article introduces a new book 'Deep Understanding of Linux Processes and Memory' that systematically explains CPU, memory, and process scheduling principles, covering hardware fundamentals, virtual memory, Golang coroutines, container resource management, and performance optimization techniques.
The article explains that server memory modules contain more chips because they need ECC error‑correction, additional register and data buffer chips for RDIMM/LRDIMM designs, which increase chip count, improve signal integrity, and allow larger capacities.
This article explains how to invoke Go functions from C within the same process, covering the three‑step implementation, the required cgo compilation commands, the generated intermediate files, and the runtime mechanisms such as crosscall2 and stack switching that make cross‑language calls possible.
This article explains the physical structure of computer memory modules, interpreting label strings such as "2R*8" to describe ranks and chip bit-width, and details how chips, banks, and matrix cells are organized to support burst I/O and cache lines.
This article explains the architecture of server‑grade CPU memory controllers, covering memory channel counts, bandwidth calculations, the differences between UDIMM, RDIMM and LRDIMM modules, and the role of ECC in ensuring data integrity.
This article details the motivations, technology choices, step‑by‑step deployment of Typecho on a Tencent lightweight cloud server, domain registration, site theming, custom image‑processing plugins, HTTPS setup, content migration, and a concise checklist for building a dynamic personal technical website.
