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
0. Introduction: Why You Need “Tools” Instead of “Common Commands” Sometimes, strange lags cling to the screen like fog: latency fluctuates, and packet loss appears intermittently, as if the business is being choked by an invisible hand. Don’t rush to blame the “network black hole,” and don’t immediately restart everything. Treat the system like an … Read more
The packet reception process of the Linux network card is as follows: The network card receives the data packet. The data packet is moved from the network card hardware buffer to the server memory (using DMA, without going through the CPU). A hardware interrupt notifies the CPU to process it. The CPU notifies the kernel … Read more
Recently, we encountered a project where the client’s network environment was unstable, leading to occasional packet loss and network jitter. This caused our software client to intermittently disconnect from the server, interrupting ongoing video conferences. This article takes this opportunity to explain in detail the heartbeat mechanism, packet loss retransmission mechanism, and other related content … Read more
Click the blue “Most Programmer” to follow me! Add a “Star“, every day at 18:03 to learn technology together! In-Depth Analysis of Linux Network Packet Loss 1. Background: From the image, you can see the potential locations where packet loss may occur, which actually spans the entire network protocol stack. In other words, there is … Read more
链接： https://blog.csdn.net/qq_39578545/article/details/130246445? ☞ The excellent course has completely exploded! ☜ In-Depth Analysis of Linux Network Packet Loss 1. Background: From the image, you can see the potential locations where packet loss may occur, which actually spans the entire network protocol stack. In other words, there is a possibility of packet loss at every stage. • … Read more
1. Background: From the image, you can see the potential locations where packet loss may occur, which actually spans the entire network protocol stack. In other words, there is a possibility of packet loss at every stage. • Between two VMs, transmission failures may occur due to errors such as network congestion or line faults; … Read more
Introduction: The Complex Nature of Packet Loss Issues Network packet loss on Linux servers is one of the tricky problems that operations engineers often encounter. It may manifest as slow application responses, intermittent service interruptions, or degraded user experiences. Unlike systems like Windows, Linux, with its robust network stack and rich diagnostic tools, can achieve … Read more
Previously, an article analyzed the reasons for packet loss in bonded network interfaces and their solutions. This article will detail the root causes of packet loss in bonded network interfaces and dynamically analyze the kernel using the bpftrace tool. We will also use dropwatch to observe packet loss in the kernel: Packet loss occurs in … Read more
Packet loss refers to the situation where data packets are discarded during the transmission process due to various reasons before they reach the application program. The number of discarded packets divided by the total number of transmitted packets is what we commonly refer to as the packet loss rate. The packet loss rate is one … Read more