What is the Application Performence Monitoring in Networking.How we can do that one.Let me know the deatils please.
I guess I would be interested in some clarification. APM is a large category. There are tools which are application based, you can take a look at most of the classical testing tool vendors and find an APM offering based upon their sampling methods. Mercury Interactive has Topaz, Segue and Compuware have similar offerings.
There are also options on the network side of the house, reproducing streams for sampling independent of the application. First you must determine protocol family and type of stream. This will usually narrow the field of potential caondiate apps. The tools that I have found to be most flexible in this are are the ones from NetIQ. They offer both network stream based items as well as voice over IP specialized ones.
From an OSI model perspective, Network tools usually sample at the bottom of the IP stack, at session layer (Sockets). Application sampling tools usually sample further up the OSI stack, at presentation layer (Http, FTP, OCLIB,...) or into the application layer (ODBC, CORBA, DCOM, ....).
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