voip packet loss

Accustomed to TCP programming, it is wrong to think that UDP can handle these problems. A udp application must take full responsibility for reliability, including packet loss, duplication, latency, out-of-order, and connection failure.Generally, we develop and test on a LAN with good reliability and low transmission latency. Some problems are not easy to expose, but errors may occur on the large internet.Th

Production of a Linux device concurrency is relatively large, droped packet more, especially in the running game packets, there is a serious loss of packet phenomenon, suspected network card performance, in the replacement of equipment before the solution through the software method, through some data on the internet to show that this phenomenon, Also may be the

whether the domain-controlled DNS Set forwarding address problem, through the Discovery domain control DNS forwarding address for the Singapore address, the basic judgment is a problem, so change the forwarding address for the local ISP DNS, through the test client discovery, All resolved Baidu's IP is the mainland's Baidu server address, and the access speed and ping packets are normal.This troubleshooting let me on the domain control of some basic concepts have a deep understanding, because l

Sometimes I want to discard some packages, such as (audio and video) at some time. I wrote a filter for packet loss. For the Declaration, see the following file. However, during use, when the video is still closed and the stream is opened again, there will still be a picture before it is closed, and the picture after it is turned on will pop up. I wonder if you have any better solutions. Filter will be

before using Eclipse to test MAVEN's Web project, you can automatically publish your workspace's Web project code to "F:\IWorkspace\.metadata\" by clicking on "Clean" in the Eclipse internal Tomcat right button. Plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps "This path is very convenient. If the war package deployed in Tomcat chooses the "Add External Web Module", then the test is going to cry. The MAVEN command is used before each test to repackage, the process of packaging is not only ver

Before using Eclipse to test MAVEN's Web project, you can automatically publish your workspace's Web project code to the F:\IWorkspace\.metadata\.plugins\ by clicking "Clean" on the inside of the Eclipse Tomcat right button. Org.eclipse.wst.server.core\tmp2\wtpwebapps "This path is very convenient. If the war package deployed in Tomcat chooses the "Add External Web Module", then the test is going to cry. The MAVEN command is used before each test to repackage, the process of packaging is not onl

Reprint: http://blog.csdn.net/galaxy_fxstar/article/details/5290498 Recently with tcpdump grab bag, found that there are a large number of drops ("packets dropped by kernel"), As follows: Tcpdump-i eth0 DST Port 1234 and udp-s 2048-x-tt >a.pack Packets Captured3043 Packets received by filter2706 packets dropped by kernel Packet Drop Reason: After Google and analysis, the cause of this drop is due to the libcap caught

Analysis of the causes of UDP packet loss in Linux system kernel1. UDP Checksum ErrorPhenomenon: You can use NETSTAT-SU to see that there is a UDP error packet.Tcpdump catch packet, open the captured UDP message in Wireshark, turn on checksum option, error packet.Scenario: Finding link Failure www.ahlinux.com2, Firewall OpenSymptom: A package for a specific port

, we set the maximum limit of 4,096, is the driver inside each receive a batch of packets, it will ixgbe_alloc_rx_buffers assign a batch of new SKB and pagePCI_DMA mapping to the hardware to collect packetsHere the first Tasklet dispatch to CPU1, cpu2 the problem can be explained, the VM packet triggered the network card cpu1, cpu2 on the interruption, until soft interrupt, KFREE_SKB, Trigger Idx_release, then tasklet_schedule, then TX _action has bee

http://view.inews.qq.com/a/20161025A0766200QQ in narrowband eraQQ is a narrow band of the most representative of the product, in that network transmission efficiency is lower than the era, we still remember Google's homepage? Why is the simple page of Google so concise?Google was born in 1998, is also in the narrow-band era, you will find its home byte size is less than 1024, why less than 1024 bytes, because the Ethernet MTU (that is, the largest transmission unit) is 1024,google in order to le

FEC (Forward error Correction) forward error correction UDP\RTP used to improve wireless and other network packet loss problems The algorithm is not introduced at this stage. Idea: FEC ENCODE adds redundant packets, and when the wireless network drops packets, the receiver uses redundant packets to decode the lost packets. Example: 10 packets, the code will add 2 packets, a total of 12 packets sent to th