packet loss analyzer

Detailed analysis can be performed based on the SEQ sequence number and ACK sequence number of the Wireshark.Visible, the network drops (may be network congestion, it is possible that the backbone of the "firewall" intentionally randomly dropped packets, because the server's IP in foreign countries) for the network response will have a great impact.Retransmission after a packet loss (or timeout) is an impor

Use of cnistnet (14:30:19){ Function onclick () { Scope. articel_quote_alert scope. articel_quote_alert ('5548dcdb0100a5tz '); Return false; } } "Href =" javascript:; "> Reprinted Tags:Cnistnet Miscellaneous Category: Technical logs 64 bytes from 192.168.7.86: icmp_seq = 36 TTL = 64 time = 100 MS64 bytes from 192.168.7.86: icmp_seq = 37 TTL = 64 time = 100 MS --- 192.168.7.86 Ping statistics ---38 packets transmitted, 34 encoded ed, 10%

The kernel has a buffer for packets to be delivered to tcpdump. IfTcpdump doesn' t respond quickly enough, the kernel will overwrite oldPackets with new ones.When tcpdump is used to capture packets, the kernel allocates a buffer to store the packets transmitted to tcpdump. If tcpdump is not processed fast enough, the newly arrived packet will overwrite the earlier packet in the buffer, that is, dropped

captured:After this, a question and answer, super harmony.Of course, there is another workaround, that is to let OS X user disable ARP unicast request such an "advanced" feature, disable method is as follows:Open Terminal Terminalsudo su if the power-on password is set, enter the power-on password.touch/etc/sysctl.confecho net.link.ether.inet.arp_unicast_lim=0 >>/etc/sysctl.confchown root:wheel/etc/sysctl.confchmod 0644/etc/sysctl.confturn off the terminal terminalRestart the machine after the

TC Qdisc Linux flow control under theModify Ping delay of the test Add rule: # TC Qdisc Add dev eth0 rootTo delete a rule: # TC Qdisc Add dev eth0 rootTo Modify a rule: # TC Qdisc Change dev eth0 rootTo view the rules:# TC Qdisc ListOR # TC Qdisc Showuse fromETH0InterfacePingthe delay is +Ms Up and down fluctuation forTenMstc Qdisc Add dev eth0 root netem delay 1000ms 10ms [Email protected] ~]# Tcqdisc ShowQdisc netem 8003:dev eth0 root refcnt 2 limit delay 1.0s 80.0msModify Configuration[[ema

The problem of data packet loss transmitted by php big form using the post method In the production environment, a huge form, including three images, hundreds of input boxes and nearly one thousand checkboxes, is intercepted when The post method is used to submit data to the background.In the production environment, a huge form, including three images, hundreds of input boxes and nearly one tho

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