arXiv subjects

Minhu Wang

Publications and source records attributed to Minhu Wang.

3 recordsLinked to original sources

arXiv2025

Rattan: An Extensible and Scalable Modular Internet Path Emulator

The rapid growth of Internet paths in heterogeneity, scale, and dynamics has made existing emulators increasingly insufficient in flexibility, scalability, and usability. To address these limitations, we present Rattan, an extensible and scalable software network path emulator for modern Internet conditions. Rattan's core innovation lies in its cell-based architecture: by splitting emulation functions into modular "cells" with well-documented asynchronous interfaces, users are allowed to easily compose different cells by hierarchically linking them and easily construct new cells by using standard cell interfaces. This design enables: (1) scalability, supporting hundreds of concurrent gigabit-level paths on a single machine and cluster-level experiments composed of multiple machines; (2) extensibility, simulating new network conditions by constructing new cells. Rattan empowers developers and researchers to efficiently and confidently evaluate, validate, and diagnose diverse network transport innovations for online services.

cs.NI↗

arXiv2020

Interpreting Deep Learning-Based Networking Systems

While many deep learning (DL)-based networking systems have demonstrated superior performance, the underlying Deep Neural Networks (DNNs) remain blackboxes and stay uninterpretable for network operators. The lack of interpretability makes DL-based networking systems prohibitive to deploy in practice. In this paper, we propose Metis, a framework that provides interpretability for two general categories of networking problems spanning local and global control. Accordingly, Metis introduces two different interpretation methods based on decision tree and hypergraph, where it converts DNN policies to interpretable rule-based controllers and highlight critical components based on analysis over hypergraph. We evaluate Metis over several state-of-the-art DL-based networking systems and show that Metis provides human-readable interpretations while preserving nearly no degradation in performance. We further present four concrete use cases of Metis, showcasing how Metis helps network operators to design, debug, deploy, and ad-hoc adjust DL-based networking systems.

cs.NI↗

arXiv2018

PAM: When Overloaded, Push Your Neighbor Aside!

Recently SmartNICs are widely used to accelerate service chains in NFV. However, when the SmartNIC is overloaded, casually migrating vNFs away from SmartNIC to CPU may lead to additional packet transmissions between SmartNIC and CPU. To address this problem, we present PAM, push aside migration to effectively alleviate the hot spot on SmartNIC with no performance overhead. Our key novelty is to push vNFs on the border of SmartNIC and CPU aside to release resources for the bottleneck vNF. Evaluation shows that PAM could efficiently alleviate the hot spot on SmartNIC and generate a service chain with much lower latency compared with the naive solution.

cs.NI↗