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hoad_312348's avatar
hoad_312348
Icon for Nimbostratus rankNimbostratus
Mar 02, 2017

"Total Executions" statistic for an iRule?

I'm looking for an (in-depth) explanation of the "Total Executions" column under statistics for iRules.

 

I have seen that number increment by 6, for example, after accessing an iRule (yes, I am sure no other VIP had the rule applied and that I was the only one able to access that VIP). I have also seen it not increment after accessing and iRule.

 

Just wanting to better understand. Thank you.

 

application delivery
iRules
LTM
  • Kevin_Davies_40's avatar
    Kevin_Davies_40
    Mar 02, 2017

    It is the number of times the F5 has triggered an iRule. The event used by the iRule determines how often it will be executed.

     

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  • Kevin_Davies_40's avatar
    Kevin_Davies_40
    Icon for Nacreous rankNacreous
    Mar 02, 2017

    It is the number of times the F5 has triggered an iRule. The event used by the iRule determines how often it will be executed.

     

    • hoad_312348's avatar
      hoad_312348
      Icon for Nimbostratus rankNimbostratus
      Mar 02, 2017

      The event I am using is HTTP_REQUEST. Is this described or defined in the docs anywhere?

       

    • Kevin_Davies_40's avatar
      Kevin_Davies_40
      Icon for Nacreous rankNacreous
      Mar 02, 2017

      Yes and no. Its described in the iRule training but it requires an understanding of protocol behaviour as well. HTTP_REQUEST can be triggered many times in a single connection as HTTP/1.1 specification keep connections open for a time so the browser can reuse them for subsequent requests. A single web browser can have multiple connections.

       

    • Kevin_Davies_40's avatar
      Kevin_Davies_40
      Icon for Nacreous rankNacreous
      Mar 02, 2017

      If you not seeing consistent statistics the turn on developer mode in your browser and disable caching. Refreshes of a page will pull images out of the local browser cache and they wont request it from the F5.