how to view network traffic

need to see whether the network card traffic is abnormal. Receive data part RXPCK is greater than 4000, or RXKB is greater than 5000, then may be attacked, the normal server network card traffic is not so big. Unless you're copying the data yourself. Calculate the actual speed, take the peak of rxkb or TXKB, convert t

Sar-n Dev #查看当天从零点到当前时间的网卡流量信息sar-n Dev 1 #每秒显示一次, showing 10 times sar-n dev-f/var/log/sa/saxx #查看xx日的网卡流量历史sar-Q #查看历史负载sar -B #查看磁盘读写1, view network card historical traffic focus#sar-N DEVIFACE indicates the device name rxpck/s the number of packets received per second TXPCK/S the number of packets emitted per secondrxkb/s amount of data received per second, u

Iftop command Installation The code is as follows Copy Code [Root@test iftop-0.9]# make[Root@test iftop-0.9]# make install[Root@test iftop-0.9]# Iftop Instance The default is to monitor the traffic of the first network card Iftop Monitoring eth1 Iftop-i eth1 Direct IP display without DNS reverse resolution Iftop-n Display the port number directly and do not dis

View CPU, memory, network traffic, and disk I/O in CentOS Install yum install-y sysstat Sar-d 1 1 Rrqm/s: the number of merge read operations per second. That is, delta (rmerge)/sWrqm/s: Number of write operations performed on merge per second. That is, delta (wmerge)/sR/s: The number of read I/O devices per second. That is, delta (rio)/sW/s: the number of write

View historical data for network traffic in OssimEstablishing a baseline in a monitoring network segment is an important measure in network monitoring, and there is no baseline flow without a comparison criterion, which can be used to detect the

CentOS view CPU, memory, network traffic, and disk I/O installation yum install-y sysstat sar-d 1 1 rrqm/s: the number of merge read operations per second. That is, delta (rmerge)/swrqm/s: Number of merge write operations per second. Delta (wmerge)/sr/s: the number of read I/O devices per second. That is, delta (rio)/sw/s: the number of write I/O devices complete

Linux View network traffic Below the GUI, there is a lot of tools to show network traffic, so what to do under the command line.It is obvious that there are, for example, Ifconfig, there will be such output:RX bytes:1224128649 (1.1 GiB) TX bytes:34114947 (32.5 MiB)After a w

Use the Vmstat command to view system resource conditionsHow do I see CPU, Memory usage, network traffic, and disk I/O in command line mode?Q: How can I view CPU, memory usage, network traffic and disk I/O in command line mode?A:

await, stating that I/O has almost no waiting time, if the await is much larger than SVCTM, the I/O queue is too long, the response time of the application gets slower, and if the response time exceeds the allowable range of the user, consider replacing the faster disk and adjusting the kernel Elev Ator algorithm, optimize the application, or upgrade the CPU.The queue Length (AVGQU-SZ) can also be used as an indicator for measuring the system I/O load, but because Avgqu-sz is averaged over a un

Ifstat: Report the interface status. It is a network traffic monitoring program that can view the outbound and inbound bytes of the NIC. Next we will install ifstat under Ubuntu9.04. Installation command (SEE): apt-getinstallifstat Simple Description: ifstat is like iostat/vmstat describing other system conditions. It is a tool used to measure the activity status

Linux Environment View "network traffic" tools and commands 1. nethogs: View traffic consumption by process [Email protected] ~]# yum-y install Epel-release.noarch[Email protected] ~]# yum-y install nethogs.x86_642. Iptraf: View

This article introduces how to use Python to view network traffic information of the system. if you need it, you can refer to it for reference. Let's take a look. Preface The traffic information can be directly stored in/proc/net/devTo view, the program implemented by the