test jitter and packet loss

Calculate the awk code of CBR jitter: # Measure the end to end delay jitter by the trace file # calculation method: the jitter rate is obtained by dividing the delay time difference of adjacent data packets by the Number Difference of data packets; # jitter = (trecvj-tsndj) -(trecvi-tsndi)/(J-I), j> ibegin {# program

hyper-threading, Gigabit Ethernet Card, 8 GB memoryModel 1 Single-host, single-thread asynchronous UDP Service, no business logic, only packet receiving operations, except for UDP packet header, one byte data. Test Results Process count 1 2 4 8 Average processing speed (packets/s) 791676.1 1016197 1395040 1491744

card, 8G memoryModel 1Standalone, single-threaded asynchronous UDP service, no business logic, only the packet operation, in addition to the UDP header, a byte of data.Test results Number of processes 1 2 4 8 Average processing speed (Pack/sec) 791676.1 1016197 1395040 1491744 Network card Traffic (MB/s) 514.361 713.786 714.375 714.036

2048 packets per second based on 24 Mbit/s, this pressure is quite small. Packet Loss is normal. The higher the packet loss rate, the higher the possibility of packet loss. It is not necessarily related to the speed of t

full, this is not detected by TCP! The only thing TCP can do is to make a choice of sending rate according to the ACK of the feedback!This kind of BBR can avoid the 2nd class drops, and can identify the 1th class drops, but for the 3rd class drops, for the BBR, for the time being, the 3rd Class packet loss processing is the last thing to do.BBR handling the third type of

-- bandwidth 200000[Root @ localhost nistnet-3.0a] # The above is the command script of the basic server. Generally, you can use cnistnet-u to check whether it is started. If it is not started, a script without a directory will be reported, after the startup, use cnistnet-R to view the status. You can view the latency, jitter, and packet loss related to the cont

UDP-based RTP transmission in the complex public network environment, especially 3G, 4G, WiFi network faced with packet loss, disorderly sequence, repetition, jitter and other issues, seriously affect the real-time audio and video interactive effect, even if it is a RTP packet lost, if the receiver does not do processi

How should I avoid packet loss when a large amount of data is continuously transmitted over TCP? For example, sending a file. I remember someone mentioned the possible stack overflow. How can this problem be avoided? Can I send a confirmation packet after receiving the data? After receiving the confirmation packet

, which can be viewed by uname-r. Then attach the permission: Chmod-R 755 // lib/modules/2.6.18-128. el5/kernel/net/ Grant the executable permission, so that the executable permission will be assigned during restart. Then run the depmod command to update the modules. dep file. [Root @ server46 netxtreme2-6.2.23] # vi/etc/modprobe. conf file Alias eth0 bnx2 Alias eth1 bnx2 Alias scsi_hostadapter aacraid Alias scsi_hostadapter1 ata_piix OK. Exit, save, Reboot system After logging on to

packet loss. The speed of opening a Web page is very slow, sometimes there will be some content or the whole page can not show the problem; QQ, such as instant messaging tools such as frequent drop line or prompt landing timeout, has been set to automatically obtain IP address, but not every time the normal access to download files slow ... A large part of these failures are caused by the

packet loss. The speed of opening a Web page is very slow, sometimes there will be some content or the whole page can not show the problem; QQ, such as instant messaging tools such as frequent drop line or prompt landing timeout, has been set to automatically obtain IP address, but not every time the normal access to download files slow ... A large part of these failures are caused by the

LibPcap packet loss problem-Linux Enterprise Application-Linux server application information. The following is a detailed description. Author: Yu Zhu During this time, we checked the high packet loss rate of LibPcap. Many people mentioned this on the internet, but they always suspect that their problems are different

This is a BDP test in rhca, which is also a very common simulation of latency and packet loss. I will share it with you now. We also use the application software to test TCP/UDP comparison. When we test the impact of BDP on TCP/IP, we all need some network latency and

Qdisc Add dev eth0 root netem loss 1% This command sets the transmission of the ETH0 network card to a random drop of 1% packets. Example: Executing on 216 #tc qdisc add dev eth0 root netem loss 10% displaying 16 packages only 13 have received. You can also set the success rate of packet loss: # TC Qdisc Add dev eth0

transmission of the eth0 NIC to randomly discard 1% of packets. Example: Executing on 216#tc qdisc add dev eth0 root netem loss 10%Show 16 packages only 13 received. You can also set the success rate of packet loss:# TC Qdisc Add dev eth0 root netem loss 1% 30%This command sets the transmission of the eth0 NIC to rand

connection without packet loss. Then, I directly access and operate the sales system on the workstation in the Central Data Center. Everything is normal, it indicates that the network of the sales server and the central data center is normal. Is there a network problem at the sales office? Try to restart the switch at the sales office and test that the fault sti

This article mainly uses an example to explain in detail how to solve the packet loss problem caused by CISCO router faults? The following article gives me a detailed answer. Recently, some people in my department (Department A) reported that they could not access the network of the higher-level department (Department B. I use the ping command from the computer A1 (IP Address: 10.20.12.11/24) used by this p

log results of running the program till now are as follows: The Code is as follows: Copy code 20130319 12: 23: 01: eth0 1 ping 100% loss20130319 13: 43: 50: eth0 1 ping 100% loss20130319 18: 11: 18: eth0 1 ping 100% loss20130323 08: 04: 59: eth0 1 ping 100% loss20130323 14: 41: 04: eth0 1 ping 100% loss20130324 12: 49: 04: eth0 1 ping 100% loss20130327 13: 15: 47: eth0 1 ping 100% loss20130401 11: 17: 42: eth0 1 ping 100% loss20130402 09: 02: 14: eth0 1 ping 100% loss201

protection software) on your computer, and bind the IP address and MAC address of your computer to the vro. Some terminal devices may not be bound, such as mobile phones and tablets. You can try to change the LAN port of the router to another uncommon IP segment.Note that:If you are using a vro in a company or hotel environment, the network environment is relatively complex. Some users use vrouters as vswitches and may encounter gateway address conflicts, spoofing, and broadcast storms, slow Ne

The out-of-order and packet loss of Java Datagram-general Linux technology-Linux programming and kernel information. The following is a detailed description. 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