solarwinds network performance

System optimization is a complex, complex, and long-term task. The following subsystems are usually monitored: CPU, Memory, IO, Network, etc. I. CPU performance indicators CPU utilization: User Time Context switch: It is associated with the CPU usage. If the CPU usage is in good state, a large number of context switches are acceptable. Runnable queue: three threads per processor.Monitoring tools Vmstat $ V

IperfIperf is a tool for measuring network throughput performance, which can test the throughput of TCP or UDP, and in order to perform iperf testing, a connection must be established between the server (to discard traffic) and the client (to generate traffic).The Iperf has TCP and UDP two test modes, respectively, as described belowTcp Measuring network

parameter values do not take effect immediately. If you want to change the parameter values to take effect immediately without restarting the server, run the following command: # sysctl-p to introduce the Kernel File and configuration file sysctl in/proc/sys. conf: because all the kernel parameters that can be modified are in the/proc/sys directory, sysctl. the conf variable name omits the previous part of the directory (/proc/sys ). To convert a file in/proc/sys to a variable in sysctl, follow

High-performance web development will be a series. From HTML, JS, CSS and other front-ends to network transmission links such as HTTP/TCP. From Application Server languages such as Asp.net to database optimization. From architecture design to third-party components and solutions. There are about 4-5 blogs related to high-performance web development.

About the various performance test posts on the web, I would like to say the following points:1, in order to make the performance test more objective, the actual, should explain to what scene carries on the test, the query, or modifies, whether contains the primary key, contains several indexes, each difference is what. Because of the different MySQL branches, the reason exists because there is a solution t

Broadcom Network card settings:A Dell R720 server was recently configured and the operating system installed is Windows 2008R2. When configuring the Hyperv virtual machine, it was found that the network performance was poor and that it was 0.5m/s to copy data from other physical machines, but virtual host was not affected.Later reinstall the Intergration Service,

, the string is constantly refreshed, which is the flow of data transfer process and data packets, focusing on the third and fourth columns that represents which ip+ port is connected to which ip+ Port . Ctrl + C exits the program.The tcpdump also has the- C and- w options,-c Specifies the number of catches, and-W saves the crawl results to the specified path [Email protected] ~]# tcpdump-nn-i ens33-c 10-w/home/ask/documentation/ Besides, there are [[email protected] ~]# t

Improve Web page performanceHttp://www.w3cplus.com/performance/10-ways-minimize-reflows-improve-performance.htmldebugging method of Web page lagAll can ah, timeline more direct, generally first look at this.Profile, you can see the specific invocation information in detail. Page as long as no less than 30 frames is smoothGenerally to 26 can not see how many frames flash?GIF generally 8-12 frame bar mostly with 24 frames ... High frame rate requirement

Linux Performance Tuning 15th: common network parameter sorting about linux Performance Tuning 14th: Adjusting socket buffer http://www.bkjia.com/ OS /201307/230154.html 1. tcp connection persistence management: net. ipv4.tcp _ keepalive_time = 7200 if a connection is idle within the specified time of this parameter, the kernel initiates a net probe to the remote