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RTCEEIncrementalBuildComparisonBetweenReleasesForIBMi
<div id="header-title" style="padding: 10px 15px; border-width:1px; border-style:solid; border-color:#FFD28C; background-image: url(<nop>https://jazz.net/wiki/pub/Deployment/WebPreferences/TLASE.jpg); background-size: cover; font-size:120%"> ---+!! <img src="https://jazz.net/wiki/pub/Deployment/WebPreferences/new.png" alt="new.png" width="50" height="50" align="right"> Rational Team Concert For IBMi Incremental Build Performance Comparison Between Releases %DKGRAY% Authors: Main.LuLu<br> Date: June 29, 2015</br> Build basis: Rational Team Concert for IBMi from 5.0.2 to 6.0 %ENDCOLOR%</div></sticky> <!-- Page contents top of page on right hand side in box --> <sticky><div style="float:right; border-width:1px; border-style:solid; border-color:#DFDFDF; background-color:#F6F6F6; margin:0 0 15px 15px; padding: 0 15px 0 15px;"> %TOC{title="Page contents"}% </div></sticky> <sticky><div style="margin:15px;"></sticky> ---++ Introduction This report compares the incremental build performance of RTC for IBMi between releases since v5.0.2 until v6.0. Generally constant performance improvements are made into releases of RTC for IBMi. The objective of this report is to present the improvements. The performance data provided is obtained by benchmark test of each release. The report includes build duration and links to the detailed build activities. ---++ Disclaimer %INCLUDE{"PerformanceDatasheetDisclaimer"}% ---++ Findings Based on the test data, incremental build performance of the RTC for IBmi has improved significantly from 5.0.2 to 6.0. From *5.0.2 to 6.0*, "Collecting buildable files" activities during build preprocessing is the main improved activities based on the new buildmap mechanism. ---++ Topology The tests are executed in a Single Tier Topology infrastructure like the one in the following diagram: %INCLUDE{"RTCEETestingTopologies" section="SingleTierI"}% The RTC server was set up based on !WebSphere and DB2 on IBMi. The build machine with Rational Build Agent was on IBMi. <table class="gray-table"> <tr> <th><strong>Test Environment</strong></th> <th></th> <th></th> </tr> <tr> <td><strong>RTC Server</strong></td> <td>Operating System & Version: IBMi v7.1</br> System Resource : 4 dedicated processors, 30GB memory </br> CLM: from 6.0 GA, 4 GB heap size </br> DB2: DB2 for IBMi v7.1</br> WAS: 8.5.5.3 (from 5.0.2 GA to 6.0GA)</br> </td> <tr> <td><strong>Build Forge Agent</strong></td> <td>Operating System & Version: IBMi v7.1</br> System Resource: 4 dedicated processors, 30GB memory</br> Build System Toolkit: from 5.0.2 GA to 6.0GA </td> </tr> </table> ---++ Methodology Build time and individual activity time are compared by getting test start date and time. The sample projects for the test are: * Mortgage Application *100 * Mortgage Application *1000 <table class="gray-table" style="width: 60%"> <tr> <th><strong>Test Data</strong></th> <th></th> <th></th> </tr> <tr> <td><strong>Sample Project</strong></td> <td>Maillist *100</td> <td>Maillist *1000</td> </tr> <tr> <td><strong>Assets</strong></td> <td>500 RPGLE<br/> 200 SRVPGM<br/> 100 PGMSRC<br/> 4 DSPF<br/> 4 LF <br/> 2 PF <br/> 6 CLLE <br/> 1 * CLP <br/> </td> <td>5000 RPGLE<br/> 2000 SRVPGM<br/> 1000 PGMSRC<br/> 4 DSPF<br/> 4 LF <br/> 2 PF <br/> 6 CLLE <br/> 1 * CLP <br/> </td> </tr> <tr> <td><strong>Total Assets</strong></td> <td>817 buildable file </td> <td>8017 buildable file </td> </tr> </table> In the repository the source code is stored in one stream with one single component. Enterprise builds are executed twice against each version. ---+++Test Scenario Description After a complete build of all the programs, different changes are performed and a rebuild requested. These requests will rebuild the changed programs and impacted ones. <table class="gray-table"> <tbody> <tr> <th align="center">Test Scenario</th> <th align="center">Description</th> </tr> <tr> <td>Incremental Build</td> <td>1. Change one RPG file and request build</br>2. Change all RPG files and request build</br></td> </tr> </tbody> </table> ---++ Results ---+++ Run duration & Build Activities The charts below show the run duration comparison from 5.0.2 to 6.0. Builds are run twice against each release and the average time is taken for comparison. From *5.0.2 to 6.0*, the 'preprocessing' of the build time is improved greatly when changing all buildable files, 'collecting buildable file' activity is improved almost 97%, total build time under this scenario is improved almost 68%. Links to the individual pages are provided for the detailed build activities. ---++++ Change one RPG file and execute build <img src="%ATTACHURLPATH%/oneRPG.jpg" alt="oneRPG.gif" width="70%" height="70%" /> <strong>Detailed build activities comparison for this test scenario "Change one RPG file and execute build" can be found [[RTCEEIncrementalBuildActivitiesOneRPG][here]].</strong> ---++++ Change all RPG files and execute build <img src="%ATTACHURLPATH%/allRPGs.jpg" alt="allRPGs.gif" width="70%" height="70%" /> <strong>Detailed build activities comparison for this test scenario "Change all RPG files and execute build" can be found [[RTCEEIncrementalBuildActivitiesAllRPG][here]].</strong> ---++ Appendix A - Key Tuning Parameters #AppendixC <table class="gray-table"> <tbody> <tr> <th align="left" width="200"><strong>Product</strong><br></th> <th align="left" width="100"><strong>Version</strong></th> <th align="left" width="600"><strong>Highlights for configurations under test</strong></th> </tr> <tr> <td style="vertical-align: top;">IBM !WebSphere Application Server</td> <td style="vertical-align: top;">8.5.5.3 (5.0.2GA to 6.0GA)</td> <td style="vertical-align: top;"><strong>JVM settings:</strong> * GC policy and arguments, max and init heap sizes: <verbatim> -Xmn512m -Xgcpolicy:gencon -Xcompressedrefs -Xgc:preferredHeapBase=0x100000000 -Xmx4g -Xms4g</verbatim> </td> </tr> <tr> <td>DB2</td> <td>DB2 for IBMi v7.1</td> <td>Tablespace is stored on the same machine as IBM !WebSphere Application Server</td> </tr> <tr> <td>License Server</td> <td>Same as CLM version</td> <td>Hosted locally by JTS server</td> </tr> <tr> <td>Network</td> <td> </td> <td>Shared subnet within test lab</td> </tr> </tbody> </table> ---++++!! About the authors Main.LuLu -------------------- ---+++++!! Questions and comments: * What other performance information would you like to see here? * Do you have performance scenarios to share? * Do you have scenarios that are not addressed in documentation? * Where are you having problems in performance? %COMMENT{type="below" target="PerformanceDatasheetReaderComments" button="Submit"}% %INCLUDE{"PerformanceDatasheetReaderComments"}% <sticky></div></sticky>
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