1 tuning your application rob marshall principal solutions consultant, progress software session 131

1

Tuning Your Application

Rob Marshall

Principal Solutions Consultant, Progress Software

Session 131

© 2009 Progress Software Corporation. All rights reserved.

Agenda

Overview of a OERA application AppServer Code Testing Using the VSTs Using Profiler Interpreting the Results

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Application Overview

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The OERA Basics Separate the UI from the Business Logic Separate the Data Access from the Business Logic

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AppServer


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Data


AppServer Code Testing

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Why Test the code????



Verify it is as efficient as it can be Run it locally to get profiler information Capture VST information Verify the output

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IF vAppServer THENDO: /* Connect to AppServer */ CREATE SERVER hAppSrv. vRet = hAppSrv:CONNECT ("-sessionModel Session-free - AppService " + cASName + " -H " + cASIP + " -S 5162","adm-gym",""). /* If error, run the routine locally and inform the developer */ IF NOT vRet THEN DO: MESSAGE "Failed to Connect to AppServer - Running Locally“ VIEW-AS ALERT-BOX. RUN common/commonprocs.p PERSISTENT SET CommonProcs. SESSION:ADD-SUPER-PROCEDURE(hCommonProcs). END.END.ELSE

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IF vAppServer AND VALID-HANDLE(hAppSrv) THENDO: /* We are running on the AppServer, and we are connected to it */ RUN "salesorder/SI/Get.p" ON SERVER hAppSrv (INPUT ?, /* Session ID */ INPUT ?, /* RowID */ INPUT 0, /* ProdID */ INPUT 0, /* Rev */ OUTPUT TABLE-HANDLE phttError, OUTPUT DATASET DSProposal).END. ELSEDO: /* We are running locally */


Using VSTs

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Ask not what you can do for your VSTs, but what your VSTs can do for you…..

So What is a VST…..


Using VSTs

Background Check Index Range Size (-indexrangesize) Table Range Size (-tablerangesize)

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Using VSTs

Major VST’s to review IndexStat – Shows index usage, look for unused

indexes or inefficient index usage in your tests TableStat – Shows table usage, look for excessive

reads or updates

Gotcha’s…. These VSTs are from the start of the DB server, not your

specific session

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Using VSTs

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Using VSTs

Your VSTs: _UserIndexStat – Shows index usage for this session _UserTableStat – Shows table usage for this session _UserIO – shows overall DB access for the session _MyConnection – Is the current connection you are using

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Tools

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VSTs are nice, BUT……..

What other tools are available?


Tools

The Profiler Utility OpenEdge Management Compile Listing Compile XREF Many third party tools (PEG, OEHive, PSDN, etc)

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Using Profiler

• Profiler is a tool, not a automatic fix utility• It can help identify areas of performance concern• Profiler is officially unsupported but many folks in the

Global Progress community extend it and it is a very useful tool

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Using Profiler

To get the best results, you need source code in your path

Profiler does not count time used to enter data, only execution time

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Using Profiler

Look for sections of code with Long execution times Many iterations Called often

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Using Profiler

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To Use In-Line Arguments to turn on Profiler:

IF vProfiler THENDO: /* * Start Profiler using in-line directives */ PROFILER:ENABLED = TRUE. PROFILER:LISTINGS = TRUE. PROFILER:COVERAGE = TRUE. PROFILER:DESCRIPTION = cProfDesc. PROFILER:FILE-NAME = cProfName. PROFILER:DIRECTORY = cProfDir. PROFILER:PROFILING = TRUE.END.


Using Profiler

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To Use In-Line Arguments to turn off Profiler:

IF vProfiler THENDO: /* * Turn off profiling using in-line directives */ PROFILER:PROFILING = FALSE. PROFILER:WRITE-DATA(). PROFILER:ENABLED = FALSE.END.


Using Profiler

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Profiler as a client start-up:

In your normal client session startup add:-zprofile ProfileConfigFile

The Profile Config File contains:-OUTFILE Filename-LISTINGS [Directory] -DESCRIBE Description


Interpreting the Results

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Now that we have captured some data, what next?



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You may need to edit your .out file…..

6 "DaypartLookup vehicle/bevehicle.p" "" 02 "Vehicle/SI/VehicleLookup.p “/tmp/list/dbg_VehicleLookup_6ca05444" 347824 "ClearMessages common/commonprocs.p" "" 03 "ServiceAdapter common/commonprocs.p" "" 05 "vehicle/bevehicle.p" “/tmp/list/dbg_bevehicle_6da05444" 28781



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In Summary

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You can use simple tools (including OpenEdge Management)

The performance review process can be easily incorporated into any

development process

Ensuring performance during the development process saves effort later

Tuning Your Application

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Rob Marshall

Principal Solutions Consultant, Progress Software

Session 131

1 tuning your application rob marshall principal solutions consultant, progress software session 131

Documents

profiler profiler

progress software corporation

progress software session

data slide

path profiler

global progress community

vsts major vsts

appserver application