Focused on system technology, sharing cutting‑edge developments, innovation and practice, and analysis of industry tech hotspots.
Netcap, an open‑source eBPF‑based kernel network capture tool from ByteDance STE, lets developers trace packets across the entire Linux network stack, filter with tcpdump syntax, and extend functionality with custom filters, dramatically improving the efficiency of diagnosing kernel packet loss problems.
The 2024 Netdev 0x18 conference in Santa Clara showcased six ByteDance STE presentations covering machine‑learning‑driven Nginx latency tuning, a novel zero‑copy notification, fine‑grained TCP tuning with eBPF, transparent shared‑memory communication, cross‑data‑center traffic management using AI, and asymmetric multi‑processing to cut network jitter.
This article explores the latest concepts, planning roadmap, and practical applications of large‑model AI in intelligent operations, detailing AIOps use cases, system‑level automation, multi‑agent architectures, and how a dedicated platform accelerates deployment and efficiency across data‑center environments.
At the inaugural IEEE RAS in Data Center Summit (June 11‑12, California), ByteDance’s STE team presented two papers—one on AI‑guided, prediction‑based memory error prevention and another on building high‑reliability AI server head nodes—detailing challenges, solutions, and future directions for data‑center RAS.
This article explains how the STE team built an integrated workflow for automatic coredump perception, collection, reporting, and analysis in OpenBMC, covering BMC fundamentals, OpenBMC architecture, pain points, offline debugging with IPK packages, and future automation enhancements.
The presentation explains how large‑model agents empower AIOps by automating routine tasks, enhancing anomaly detection, fault diagnosis, and remediation, while outlining architectural components, multi‑agent collaboration, and future directions for building self‑healing, observability‑driven operations platforms.
This article examines the integration of Linux io_uring into ByteDance's high‑performance Netpoll NIO library, detailing architectural changes, receive/send workflows, benchmarking methodology, and results that show over 10% higher throughput and 20‑40% lower latency while eliminating system calls.
The article introduces xcap, an eBPF‑based next‑generation kernel network packet capture tool that overcomes the limitations of traditional utilities like tcpdump by providing flexible hook points, customizable filtering, and support for diverse network scenarios such as AF_XDP and DPDK, thereby dramatically improving packet‑loss debugging efficiency.
This article explains the motivation, design, advantages, implementation details, and future roadmap of HTTPBOOT—a Linux‑based, high‑stability, high‑compatibility network boot solution developed by ByteDance’s STE and ICS teams to replace traditional UEFI+PXE provisioning.
At DesignCon 2024, ByteDance’s network engineering team presented three peer‑reviewed papers—covering 800G LPO system design, low‑loss 224G SerDes link solutions, and PCB tolerance impacts on signal integrity—offering theoretical foundations and practical insights that push forward large‑scale high‑speed hardware deployment.
