check network throughput linux

In Linux, check the program running under a port-Linux Enterprise Application-Linux server application information. The following is a detailed description. When we use netstat-apn to view network connections, we will find a lot similar to the following: Proto Recv-Q Send

Method 1: loadAverage1.1 in linux: What is Load? What is LoadAverage? Load is the measure of how much the computer is working (WikiPedia: thesystemLoadisameasureoftheamountofworkthataco... linux system load check Method 1: Load Average 1.1: What is Load? What is Load Average? Load is the length of the process queue (WikiPedia: the system Load is a measure of the

server. After the communication between the two parties ends, close the Socket. The basic functions used for Socket programming include socket (), bind (), listen (), accept (), connect (), send (), recv (), and close (). It is the Socket programming flowchart.[Attach] 902 [/attach]3.3 program compilation and running results (1) compile the server-side program serv. c and client program clt. c in the VI editor of Linux. Use the cross-compilation tool

with a remote machine. It is implemented via Internet Control Message Protocol ICMP. And now some hosts filter ICMP, in this particular case, it is possible to make some hosts ping impassability, but can establish a network connection. This is a special case that is explained in advance. Again, this does not list all the optional parameters of the ping command, but it is an example to illustrate some of the common combinations that need to be underst

100baset/full1000baset/half 1000baset/fullSupports Auto-negotiation:yesAdvertised Link Modes:10baset/half 10baset/full100baset/half 100baset/full1000baset/half 1000baset/fullAdvertised Auto-negotiation:yesspeed:100mb/sDuplex:fullPort:twisted PairPhyad:1Transceiver:internalAuto-negotiation:onSupports wake-on:gWake-on:dCurrent message level:0x000000ff (255)Link Detected:yes#ethtool eth1Settings for eth1:Supported ports: [MII]Supported Link Modes:10baset/half 10baset/full100baset/half 100baset/ful

txqueuelen:1000RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)memory:fafe0000-fb000000Eth3 Link encap:ethernet HWaddr 00:25:90:5a:15:b7Broadcast Multicast mtu:1500 metric:1RX packets:0 errors:0 dropped:0 overruns:0 frame:0TX packets:0 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)memory:faf60000-faf80000Lo Link encap:local Loopbackinet addr:127.0.0.1 mask:255.0.0.0Up LOOPBACK RUNNING mtu:16436 metric:1RX packets:10 errors:0 dropped:0 overruns:0 fr

What is Linux network programming Network programming is the writing of such programs that communicate with other programs through a computer network. One of the biggest differences between web programs and ordinary programs is that the Web program is made up of two parts---client and server side. The

After booting from the installation CD--select rescue installed System--select english--ok--us--after you are prompted to do not set up the network-select no--after selecting the continue--prompt (the original operating system files are mounted in/mnt/ Sysimage), prompt (if you want to go into the Directory Select command chroot/mnt/sysimage)--Select shell start shell (this mode) will prompt bash-4.1#(If you want to go under the original operating sys

211.1.0.0-j DROPThe command for the IP segment is:Iptables-i input-s 211.1.0.0/16-j DROPIptables-i input-s 211.2.0.0/16-j DROPIptables-i input-s 211.3.0.0/16-j DROPThe command that seals the whole paragraph is:Iptables-i input-s 211.0.0.0/8-j DROPThe commands to seal several paragraphs are:Iptables-i input-s 61.37.80.0/24-j DROPIptables-i input-s 61.37.81.0/24-j DROPThere are three ways to start self-running on a server:1. Add it to the/etc/rc.local2, Iptables-save >/etc/sysconfig/iptables can

Netty Series (i) Linux network IO Model I. BASIC conceptBefore formally starting the Linux IO model, let's introduce 5 basic concepts.1.1 User space and kernel spaceNow that the operating system is using virtual memory, the 32-bit operating system, its addressing space (virtual storage space) is 4G (2 of 32). The core of the operating system is the kernel, which

Network Programming learning in linux-network debugging tool-general Linux technology-Linux programming and kernel information. For details, refer to the following section. Before starting network learning, it is necessary to know

server-side program serv. c and client program clt. c In the VI editor of Linux. Use the cross-compilation tool arm-linux-gcc to execute the compilation command to generate executable files. The command is: # Gcc serv. c = 0 serv # Gcc clt. The c-0 clt If there is no compilation error, the executable files serv and clt will be generated. (2) configure the IP addresses of servers and clients to ensure smoot

http://blog.chinaunix.net/space.php?uid=20357359do=blogcuid=1798479Under Linux detects the network card and the network cable Connection status, uses the IOCTL to send to the socketSIOCETHTOOL命令字。 #include #include #include #include #include #include #include #include #include #include #include int get_netlink_status (const char *if_name);int main (){if (Getuid (

following IP, and recording time and IP.4 procuratorial Anomaly AccountProsecution Statement :more/etc/passwdMore/etc/sudoerprocuratorial method : View user identification number : Group identification number if one of the 0 is an exception user ( except ROOT and self-established ). Also See if the/etc/sudoer file has other users such as :5 Login IP and TimeProsecution Statement :Who/var/log/wtmpprocuratorial method : Check the abnormal login time a

1.Case Demand Analysis This case uses the RHEL5 and Windows XP system environment to establish a secure ssl vpn connection 8.2 for two remote LAN and remote network management workstations across insecure Internet networks ). The gateway servers of Beijing headquarters and Shanghai Branch both use the RHEL5 system. OpenVPN must be configured separately to connect two remote LAN LAN1 and lan2. In addition, the netw