check network throughput linux

following is an example of a Telnet session on a Linux computer: $ telnet Server. Somewhere. com trying 127.0.0.1 ... Connected to serve. Somewhere. com. Escape character is \ '?] \'. "Turbolinux Release 4. 0 (Colgate) kernel 2.0.18 on a I486 login:bubba password:last Login:mon Nov L5 for 20:50:43 Linux 2. 0.6. (Posix). Server: ~$ server: ~$ logout Connection closed by foreign host $ After the user finish

session on a Linux computer: $ telnet Server. Somewhere. com trying 127.0.0.1 ... Connected to serve. Somewhere. com. Escape character is \ '?] \'. "Turbolinux Release 4. 0 (Colgate)Kernel 2.0.18 on a I486Login:bubba password:last Login:mon Nov L5 20:50:43 for localhost Linux 2. 0.6. (Posix). Server: ~$ server: ~$ logout Connection closed by foreign host $ After the user finishes the remote session, be sur

!= Netdev_tx_ok)) {Nskb->next = skb->next;Skb->next = NSKB;return RC;}Txq_trans_update (TXQ);if (unlikely netif_tx_queue_stopped (TXQ) skb->next)return netdev_tx_busy;while (Skb->next);Skb->destructor = DEV_GSO_CB (SKB)->destructor;OUT_KFREE_SKB:KFREE_SKB (SKB);return NETDEV_TX_OK;} Dev_hard_start_xmit judge Netif_needs_gso to determine whether the network card support GSO, if not supported then call Dev_gso_segment inside and call the message frag

Article title: network configuration in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Since the birth of linux, it has been doo

Article Title: Linux Firewall uses a simple rule set to protect the network. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The firewall configuration requirements are as follows:

loopback running mtu: 3900 Metric: 1 PX packets: 3880 errors: 0 dropped: 0 overrun: 0 frame: TX packets: 3800 errors: 0 dropped: 0 overrun: 0 carrier: 0 Collisions: 0 txqueue: 0 The ifconfig command not only displays network interfaces in the system, but also configures the network through Parameters. the command format is: # Ifconfig interface name IP address netmask subnet mask However, the ifconfig comm

1. Linux Network Path 1.1 Sending End 1.1.1 Application Layer (1) Socket The application layer of the various network applications are basically through the Linux Socket programming interface and kernel Space network protocol stack communication.

Network configuration commands in Linux The network structure in Linux is very complex, but the basic user space network configuration is not very difficult. If your Linux system still does not have a

is not a good idea to allow RPM to ignore this error, because the program that relies on the package may not work. Please use the--nodeps command-line option.To upgrade the RPM package:Rpm-u RPM Package Full path nameSambaOver the years, windows and the Liunx operating system have their own user base and market. However, in a general company or school, there may be both Windows and Liunx hosts, and Windows hosts can use Network Places to access share

network data is more complex than sending data. Because you need to assign a sk_buff in an atomic context and hand it over to the upper layer.Packet reception is implemented in two ways: Interrupt driver and polling. Most drivers are interrupt-driven. There are some high-throughput drivers that use polling methods.structintlength); 原子上下文中分配skbprintk_ratelimit() 限制printk的输出频率，在中断对应函数中降低输出To achieve a high-

. -Add the driver, switch to the directory where the driver is stored, and run Ndiswrapper-I WUSB54AG. inf Pass Ndiswrapper-l Check that the drivers have been installed. Load 1.3 Ndiswrapper is a module compiled into the kernel, so you need to load it to work. Ndiswrapper-m Only one execution is required. Modprobe ndiswrapper If no error message is displayed, you can view the wlan0 device through iwconfig. However, you cannot determine wheth

for every senior system administrator to analyze the network and troubleshoot problems. Use and example of the tcpdump command-Network Analysis in Linux Introduction to network data collection and analysis tool tcpdumpA

*/etc/inetd.conf File As we all know, as a server, the more open the service port, the more difficult to guarantee the security stability of the system. So servers that provide specific services should be as open as possible to the ports that provide the service, and the services unrelated to the server will be shut down, for example, a machine that is a WWW and FTP server should open only 80 and 25 ports and turn off other unrelated services such as finger auth. To reduce system vulnerabilities

Now it's time to put all of the previous theoretical knowledge into practice. Next, we will explore: ? Configuration file for network interface in Red Hat 7 ? Using Ifconfig to check and configure interfaces ? Adding and editing static routes ? Using Netstat to monitor/troubleshoot network interfaces A Key files and scriptsThe actual process of

below.Figure 6. Data reception flowchart After the network device receives the data, the DMA module searches for the BD table, takes out the idle BD, and automatically saves the data to the BD's cache, modifies the BD as the ready state, and simultaneously triggers the interrupt (this step is optional). The processor can check the status of the receiving BD table by interrupting or polling, ei

Use sysctl the command to temporarily turn on the kernel's packet forwarding Use the command to do the temporary configuration of the network, to do a permanent configuration will need to directly modify the way the file!Common tools for network detection: Ifconfig Detecting Network Interface Configuration Route Detection Routing Configurat

Ethernet Connection In Linux, the Ethernet interface is named: eth0,eth1, 0, 1 for network card number The LSPCI command allows you to view the hardware information for your network card (if you are a USB card, you may need to use the LSUSB command) Ifconfig command (interface configuration) to view interface information: $ ifconfig-a View All interfaces $ i

Linux has always been known for its strong network capabilities, while equipment ' > network equipment is also one of the three major devices that are essential for Linux-driven learning, and because of historical reasons, Linux does not enforce its "all documents" concept f

destination. This process is calledRoute. The post office connects the separated Local Area Network to the Internet and eventually formsGlobal coverageInternet. Transport Layer) The preceding layer-3 protocol allows different computers to communicate with each other. But there are actually manyProcess, Each process can have communication requirements (see Linux Process basics and

Linux basic network construction experiment, linux Basic ConstructionI. Lab Objectives Use three virtual machines to build two host-only networks: vmnet2 and vmnet3. Ii. experiment environment Intranet Internet Gateway IP 192.168.0.10/24 202.3.4.10/24 Eth0: 192.168.0.254/24Eth1: 202.3.4.254/24 GW 192.168.0.254 2