As a Web page performance testing company, we have been paying attention to the impact of new development technologies on improving the performance of Web Page programs. We have many users who encounter problems that affect their performance only because of their webpage size. Simply put, the page is too big to achieve the desired performance with limited bandwidth. In many cases, different webpages have the same basic elements. For example, the page
Iperf is a pure bandwidth test software based on the C/S model. It can test the network card throughput.
The advantage of iperf is to simply send and receive packets, to prevent hard disks from dragging down and affecting the test results.
This document uses a gigabit Nic Bcom 5720 as a test environment CentOS 6.4x64
Install iperf on both machinesYuminstalliperf -- enablerepo = epel
Start one of them as a server and open the firewall port 5001.Ipe
One, why should there be more WAN mouth?
There are three main purposes for routers to connect multiple broadband lines:
Increased bandwidth : The Internet host can access through any broadband, from the application point of view, the equivalent of a higher speed of bandwidth.
Redundant backups: If one of the broadband failures, you can use other broadband Internet access, to ensure
Several questions1, WEBRTC transmit bandwidth is estimated for each stream or the total bandwidth2, WebRTC Remb is the overall bandwidth of statistics.3, if WEBRTC at the same time to watch the multi-channel flow, how to for each stream feedback bandwidth, packet loss and other information5, if the WEBRTC simultaneously sends the multi-channel flow, how to estima
We know that many users reflect that VOLANS routers cannot be superimposed, but they can actually implement the bandwidth superposition function. The specific solution is as follows:1. Shared devices generally allow multiple users to access the Internet at the same time. They can achieve a 4-to-1 M bandwidth overlay function.2. The data flow of some specific applications only follows one line. At this time,
Usb3.1 technology has been released, and the 10 Gbps speed is enough to meet the data and HD video transmission requirements.
To enter the R D of USB, You have to build a solid foundation of USB.
The Super Mutt provided by Microsoft only contains one interface 0, which contains two ALT, Alt 1 and Alt 2, which respectively contain two pairs of ISO in/out endpoints. However, only bmaxburst of ISO out EP under Alt 2 is 1, while bmaxburst of the other three iso ep is 0, and the mult of all iso ep
Server hosting important one maintenance, to know the cost of the server hosting a year, we need to understand what the hosting server maintenance and which factors are related, these factors are important factors that affect server hosting costs:Server specification Size: Generally have 1u,2u,4u such, the larger the specification, the higher the cost of hosting.Server power consumption: CPU several hard disks several pieces of memory how many models are what these all result in different power
One: The origin of the streamThe Stream test tool was presented and completed by Professor John McCalpin of the University of Delaware, USA, and now with the change of Professor John McCalpin's work, the stream is responsible for The maintenance and improvement of all staff were also transferred to the Department of Computer Science at Virginia University.Two: the use of stream Stream is a set of comprehensive performance test assemblies, written in Fortran and C two advanced and efficient langu
Defense new stage, the United States sk100 high-hard anti-server, for the United States high-anti-server needs of people, the choice of the United States SK engine room is the most suitable. SK Engine room in the United States is the United States the strongest anti-DDoS capability of one of the room, the room distributed in Chicago, Denver, a single default 15G DDoS protection.By default, each server provides up to 29 free fixed IP addresses, unlimited traffic, large
My company's website server bandwidth suddenly increased. for help, my company's server bandwidth suddenly increased recently. the server load is not very high, and the cpu and memory are not high. why is the bandwidth High? could you help me with the analysis! Is there a program problem!
Reply to discussion (solution)
90% is too many images, too large
Im
Learn about it:
In terms of voice, how does one calculate the bandwidth consumed by codec?By default, after the analog voice is converted to a digital voice, it is cut in 20 ms segments for 20 ms segments, encapsulated with RTP, and then wrapped with UDP header, IP header, finally, the packet header of Layer 2 is sent out.
Suppose we use g.729 encoding and transmit it over Ethernet. Calculate the bandwidth
Using AJAX to Improve the Bandwidth Performance of Web Applications this article quantifies how AJAX technology can save the Bandwidth of Applications. I compared the results of the two tests in the article with a picture combination: This shows the effect is more obvious.
Here are several basic results:1. Applications that contain ajax are downloaded for the first time, which is larger than applicatio
Recently found a problem in the work, with the Linux deployment project, upload code to the public cloud machine, the connection is often interrupted, the operation of the colleague analysis is due to insufficient bandwidth, the workaround is as follows:Add parameters to the SCP command such as: SCP- L 8000 xxxxxx xxx:/sssParameter meaning:-L limit limits the bandwidth that the user can use, in kbit/s. Beca
Run the Nethogs command on the Ubuntu terminal to view the network bandwidth.
Nethogs is a network traffic monitoring tool on a terminal. It displays the bandwidth usage of each process, so that the network usage can be obtained more intuitively. It supports IPv4 and IPv6 protocols, local NICs, and PPP connections.
Top: You can view the cpu and memory used by processes, and monitor the processes that occu
Iftop Viewing bandwidth usage (total)Yum install-y iftop Installation IftopNethogs Viewing process trafficCurl http://218.5.73.233:8060/ip.php View Egress IPTo view the current thread:Ps-ef|grep JavaPs-ef|gerp Com.meiya.main (package name)1, the CPU utilization situationCommand: TopRemark: User occupies cpu1.5%, system occupies cpu1.5%, idle 95.3%, other occupies 1.7%;2, Memory utilization situationCommand: Free-gNote: Total memory size 15G, using 2G,
Traffic Bandwidth Request Status statisticsNgx_req_status used to show Nginx request status information, similar to the Apache Status,nginx module can only display the number of connections and so on information, we do not know exactly what the request, and each URL domain name consumption of the amount of bandwidth. Ngx_req_status provides these features.Functional characteristicsStatistics by domain name,
ajax| interaction
Using javascript:void (0); >ajax to improve the bandwidth performance of WEB applications This article is a very quantified description of javascript:void (0); How >ajax technology saves bandwidth for applications. I compared the screenshot of the 2 tests in the article with a drawing combination: This looks more obvious.http://www.alixixi.com/web/a/Here are a few basic results:1 applicati
Managing network bandwidth is becoming more and more important. On a network with no other routers, it makes no sense to route the broadcast traffic that flows out of the network interface. This is very inefficient for your network bandwidth and router resource usage. Let's take a look at how to better bandwidth control by using the Passive-interface command.
To
Tags: blog technical description off-line rpm package download RPM PAC Water TransferUse the QPERF command to test network bandwidth and network latency under LinuxIf no command can be installed with Yum, the command is as follows:#yum-y Install QperfIf there is no yum or no network, install the following RPM package in turn, this test is done on the CENTOS6 version, the package used is also version 6,Download RPM Package Address: Centos6/redhat6 http
Article Title: The simplest total bandwidth limit 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.
The simplest total bandwidth limit (tc script, each mainstream linux has tc and iptable, cp to a file to grant x permissions, execute OK ).... according to the
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