![]() The high-level path network data takes from a user program to a network device is as follows: ![]() You can find that data sheet (warning: LARGE PDF) here for your reference. This post will examine the Intel I350 Ethernet controller, controlled by the igb device driver. ![]() Do not adjust these settings on production machines instead, make adjustments on new machines and rotate them into production, if possible.įor reference, you may want to have a copy of the device data sheet handy. Before adjusting any setting, you should develop a frame of reference around what you need to be monitoring to notice a meaningful change.Īdjusting networking settings while connected to the machine over a network is dangerous you could very easily lock yourself out or completely take out your networking. Many of the example settings provided in this blog post are used solely for illustrative purposes and are not a recommendation for or against a certain configuration or default setting. If you truly want to tune the network stack, you will have no choice but to invest a considerable amount of time, effort, and money into understanding how the various parts of networking system interact. General advice on monitoring and tuning the Linux networking stackĪs mentioned in our previous article, the Linux network stack is complex and there is no one size fits all solution for monitoring or tuning. This blog post will hopefully serve as a reference to anyone looking to do this. It is impossible to tune or monitor the Linux networking stack without reading the source code of the kernel and having a deep understanding of what exactly is happening. This post forms a pair with our previous post Monitoring and Tuning the Linux Networking Stack: Receiving Data. This blog post explains how computers running the Linux kernel send packets, as well as how to monitor and tune each component of the networking stack as packets flow from user programs to network hardware.
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