linux - How to trace networking activity of a command

networking - Not all wireless antennas used - Unix & Linux 1 hour ago · Stack Exchange network consists of 177 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. It only takes a minute to sign up. Linux Network Stack - reddit Linux may be faster in some cases, but it still has stability issues that are hard to debug. Then there's the whole thing about most network stack research happening primarily on FreeBSD because of licensing. There's a new zero-copy network API that was developed in FreeBSD that allows line rate 64byte 10gb traffic on a 450mhz quadcore cpu.

Dec 27, 2014

Mar 13, 2011 What’s New in the Linux Network Stack? The Linux kernel is a fast moving and always changing piece of free software. Having a very mature network stack, Linux is deployed widely, especially to drive and manage the ever growing and changing world wide web. It is sometimes hard to follow the newest developments and discussions regarding the Linux kernel, so this paper gives an

2/24 Bleeding edge Linux Kernel network stack development efforts Introduction Next steps for Linux Network stack Approaching 100Gbit/s HW speeds Software stack is under pressure! Disclaimer: This is my bleeding edge “plan” Most of this is not accepted upstream And might never be…! Challenging work ahead! Encourage people: Go solve these issue before me!

Jan 28, 2016 · This post will pick up where part 2 left off, beginning by describing a packet arriving, examining softirqs, and examining how the e1000e driver passes packets up the network stack. A packet arrives! So, at long last a packet arrives from the network. Within the Linux kernel each protocol is a separate module of code which provides services to the socket layer. Socket: A socket is a connection in the networking that provides Unix file I/O and exists as a file descriptor to the user program. In the kernel each socket is a pair of structures that represent the high level socket interface and netstat: This utility shows all the network connections happening in your system. It has lots of statistics to show, and can be useful to find bottlenecks or problems. ethtool: To tune your network, ethtool can be your best friend. It is used to display and change the settings of your network interface card. If you've seen this in top or in a ps, you're likely not being attacked. It's indicating root is logged in securely, but not through a tty (no tty).. like through sftp, rsync, scp, etc.. You could always run netstat however to verify it's a friendly that's on there.. maybe your backup server Is it better? Depends on what you are doing. If you have to drive 100TB of data over a 40Gb pipe you use Linux. Basically, when you set up a DMZ for high throughput transfers (c.f Science DMZ) Linux provides you with the best results.