DX Application Performance Management

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Network Overhead for CA APM Agent

  • 1.  Network Overhead for CA APM Agent

    Posted 12-01-2015 07:19 AM


    We are planing de deploy CA APM Agent in a Datacenter.

    • Do we have to care about Network Overhead of CA APM Agent when desining de solution ?
    • Can i have some metrics about network consumption of CA APM agents ?



  • 2.  Re: Network Overhead for CA APM Agent

    Broadcom Employee
    Posted 12-01-2015 09:11 AM

    The documentation talks about factors that contribute to agent overhead :


    Deployment Guidelines - CA Application Performance Management - 10.1 - CA Technologies Documentation


    There is also this KB:



    Which is on the non-networking aspects of agent overhead which may help with any planning that you may do



    Hal German

  • 3.  Re: Network Overhead for CA APM Agent

    Posted 12-01-2015 09:29 AM

    Thank you for your answer HELLET,


    I understand that i can do stress tests in order to dertermine the overhead. But, in my context, i cannot do thoses stress tests. I'm finding some benchmarks or best practices to mitigate network consomption.



  • 4.  Re: Network Overhead for CA APM Agent

    Broadcom Employee
    Posted 12-01-2015 12:56 PM



    network overhead is dependent on the data you are gathering. Normal metric data does only consume in the order of 100 bytes or less per metric per interval (15s) - if I remember correctly. The more metrics you gather the more data you send. You should keep the number of metrics to 1000-3000 per agent as a best practice.


    What consumes more network bandwidth are transaction traces, error and stall events. If you are actively tracing all the time or generating lots of errors that will produce more data. But there are clamps in place (e.g. max 5000 components per trace, max 10 errors per interval) to also step on the breaks if things go south.


    We have been running APM in production with 10,000 of agents for years and I have not heard one customer complaining about the network traffic we generate!


    Keep your agents healthy and you won't even notice the data they send in the network.