Re: HTTPAPI Performance Issue

[Charles Wilt <charles.wilt@xxxxxxxxx>]

   AFAIK, there's no tuning to be done in the OS or HTTPAPI...
   However, there's probably places your RPG can do things faster...
   -Using variable length strings instead of constantly %TRIMming
   -integers instead of packed/zone for counting.(very minor :) )
   -how you are processing the response(XML?)..
   -debug(*off)
   -using CPYBYTES/MEMCOPY to copy large amounts of data instead of RPG's
   EVAL...
   [1]http://iprodeveloper.com/rpg-programming/breaking-64k-barrier
   But it'd help to see your code.  Otherwise, best I can recommend is to
   use standard techniques to see where the time is being spent.
   On the other hand, if your HTTPAPI using RPG is doing the work of both
   the JADE process and the original RPG...then it might not surprising it
   takes longer.  If for no other reason other than the fact that you've
   went from multiple threads of work being done on different boxes to a
   single thread.  You could get that mutli-thread improvement back by
   replace the JADE process with an HTTPAPI using RPG one that writes to
   the original data queues and allow the original RPG to do it's thing.
   I helped put together a process using HTTPAPI that send/receives XML
   docs bigger than 65K (we are on v5r4, so we had to use 16MB user
   spaces).  In fact, the reponse includes a BASE64 encoded document. That
   process takes ~10 seconds, including the BASE64 decode and the
   processing on the remote side.
   Charles

   On Fri, Jul 19, 2013 at 9:04 AM, Pat Kennedy (IT) <[2]patrken@xxxxxxx>
   wrote:

        Scott,
        Are there any tuning requirements on the iSeries to use the
     HTTPAPI
        API? I'm looking to replace a JADE process that consumes .NET web
        service and have been running performance tests comparing the
     HTTPAPI
        called from RPGLE versus the JADE approach. The JADE process has
     been
        tuned for optimal performance and outperforms my new process
     using
        HTTPAPI. I trying to justify going with this approach but have
     been
        running into performance issues.
        My prototype process uses HTTPAPI to consume the .NET web service
        directly from an RPGLE program as opposed to the JADE process
     that uses
        a series of data queues to communicate between RPGLE and a Java
     process
        that consumes a .Net web service. My company would like to retire
     JADE
        and is looking at either migrating the JADE process to WAS8 or
     directly
        consuming the web service via an RPGLE program using your HTTPAPI
     API.
        Your  assistance in this matter would be greatly appreciated.
        Thank You.
        Patrick
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References

   1. http://iprodeveloper.com/rpg-programming/breaking-64k-barrier
   2. mailto:patrken@xxxxxxx
   3. http://www.scottklement.com/mailman/listinfo/ftpapi

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