check network throughput linux

Throughput is an indicator of the network traffic that can be processed by network devices per second. In reality, network administrators often use the term "traffic" to measure the performance of devices, what is the relationship between 1-to-1 and 1-to-2? It has plagued many people.First, let's clarify the concept:Tr

A problem has been encountered in recent work: How do I need to test the throughput of the product's WiFi module, based on the existing Linux commands (closed read-only system)?Before testing, I first looked at the commands that the current system had and searched for relevant data,Find the use of NC This command, with DD can be used for throughput testing (local

default values of performance test nodes. The settings had previously used a maximum value of 128M, and a nominal value of 64M. The settings is now larger than fasterdata defaults, and appear below:net.core.rmem_max = 268435456net.core.wmem_max = 2 68435456net.ipv4.tcp_rmem = 4096 87380 134217728net.ipv4.tcp_wmem = 4096 65536 134217728 Modifying These settings has both Impacts, positive and negative:more memory are allocated for every single TCP ... Nic Tuning Vendor specific NIC Tuning info

On a Linux server, how does one check whether there is a wireless network card? Or the server in the lab. There is no interface, so I want to use some commands to link the hotspot. Of course, in Linux, the connection to wifi is not as good as win! First, we need a basic condition: the server has a wireless

:53:5a:c5View Host Name:[Email protected] ~]# hostnameLinux-pcTo modify the hosts:Add a line "IP address hostname" at the end.Execute VIM command, press i key to modify, then press: ESC,: Wq, enter, save changes.[Email protected] ~]# vim/etc/hostsTo view the contents of the file, I modified the contents of the file as follows, the first two lines are the default (different system may not be the same, regardless of it), the last line is I added.[Email protected] ~]# cat/etc/hosts127.0.0.1 localho

I. Detect network connectivity by sending and receiving email regularly#/bin/"Daily test mail" >-S server_state [email protected] -DF./state.txt~Crontab-eAdd the following tasksTen * * * */root/checknkmail Time-sharing WeekSecond, timing detection network status via email sendCheckserverstat Script content:#/bin/Bashecho"Hztelecomdns">state.txtping-C5 202.101.172.35>>State.txtecho"Bju">> state.txtPing-c5 T

Linux "Health Check" indicators and linux health check indicators Preface In an environment where "Buddha bless server is not down" and "killing programmers and offering sacrifices to Heaven", programmers are in a war every day. They are trembling with phone calls and text messages to ensure our security, discovering s

architecture. intel Platform includes 8086, 80286, 80386, 80133, Pentium series (1.2.3.4), sai Yang series, Pentium D series and centrino P-M, cor E duo, etc. 2. x86_64 is applicable to intel's Core 2 Duo, Centrino Core 2 Duo, and Xeon, AMD Athlon64/x2, Sempron64/x2, Duron64, and other 64-bit cpu.3. PPC with X86 architecture is suitable for Apple Macintosh G3, g4, G5, PowerBook, and other non-Intel models install more software than the installation disc. The installation DVD also includes two g

Article Title: Simple Network check (2 ). 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. 2. confirm that there are no problems with the online devices such as the

Article Title: Simple Network check (1 ). 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. 1. check whether the

Use ten commands to check Linux server performance within one minute If the load on your Linux Server suddenly surges and an alert message is sent to your mobile phone, how can I find out the Linux performance problem in the shortest time? Let's take a look at this blog post by the Netflix performance engineering team

This series of articles summarizes Linux network stacks, including:(1) Linux Network protocol Stack Summary(2) Network multipart offload technology Gso/tso/ufo/lro/gro in non-virtualized Linux environment(3) QEMU/KVM

Linux System and Performance Monitoring (Network)Date: 2009.07.21Author: Darren HochTranslation: Tonnyom [AT] hotmail.com Followed by the first three articles:Linux System and Performance Monitoring (CPU)Linux System and Performance Monitoring (Memory)Linux System and Performance Monitoring (I/O) 8.0

high Overruns refers to overload (exceeding NIC Buffer) B: Command format NAME Ifconfig-configure a network interface Synopsis Ifconfig [-v] [-a] [-s] [interface] Ifconfig [-v] interface [Aftype] options | Address ... NOTE This program is obsolete! For replacement check IP addr and IP link. For statistics use Ip-s link. Ifup command to enable a network card Ifco

available memory, the system may use the Swap area (if configured), which increases the IO overhead (which can be iostat in the command) and reduces system performance.Sar-n DEV 1$ sar-n DEV 1Linux 3.13.0-49-generic (titanclusters-xxxxx) 07/14/2015 _x86_64_ (CPU)12:16:48 AM IFACE rxpck/s txpck/s rxkb/s txkb/s rxcmp/s txcmp/s rxmcst/s%ifutil12:16:49 AM eth0 18763.00 5032.00 20686.42 478.30 0.00 0.00 0.00 0.0012:16:49 AM Lo 14.00 14.00 1.36 1.36 0.00 0.00 0.00 0.0012:16:49 AM DOCKER0 0.00 0.00 0.

address from the NIC to static, this field specifies the IP address of the NIC.NETMASK = 255.255.255.0 # network mask corresponding to the network adapterGATEWAY = 192.168.0.2 # GATEWAY 1. edit the file vi/etc/sysconfig/network-scripts/ifcfg-eth0 (take yourself as an example) Before editing: 　　　　　　　　　　　 Edit: ONBOOT = yes # whether the