SKB

Linux Network Performance Bottlenecks: In-Depth Analysis of skb Buffer Packet Loss

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Linux Network Performance Bottlenecks: In-Depth Analysis of skb Buffer Packet Loss

In high-concurrency network scenarios, have you ever encountered confusion such as: “The network card is not fully utilized, yet throughput is bottlenecked” or “Ping occasionally drops packets, but packet captures show no anomalies”? If you are involved in Linux operations, you have likely stumbled upon these “mystical” pitfalls. The real culprit often lies within the … Read more

pwru – A Networking Debugger Based on Linux Kernel and BPF

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pwru - A Networking Debugger Based on Linux Kernel and BPF

In nearly a decade of our involvement in cloud-native network development, we have deeply realized that troubleshooting network issues, even in small environments, can turn into a nightmare. Much of the complexity arises from the Linux kernel itself—sending a single packet can involve dozens of kernel functions from different subsystems. Traditional tools like tcpdump often … Read more