r2 - 2017-01-11 - 23:22:35 - TimFeeneyYou are here: TWiki >  Deployment Web > DeploymentPlanningAndDesign > CLMUsageModelBestPractices > JRSBIRTBestPractices

BIRT Reporting Best Practices

Authors: RafikJaouani, ErnestMah, TimFeeney
Build basis: The Rational solution for Collaborative Lifecycle Management (CLM) and the Rational solution for systems and software engineering (SSE) v6.0.1.

Where possible, replace BIRT reports with reports constructed in Report Builder against data from the Data Warehouse or LQE. Ensure that you extensively test all BIRT reports before deploying them into production; tests should include a “worst-case scenario” that causes the most data to be fetched.

Scope your reports to include only the data required by the report consumers. Reports that include more results or attributes take longer to process and render.

Narrow the result set as early as possible in the query processing. Retrieving large amounts of data, then applying filters or joins, can increase the run time and the memory demands. If you require reports that return a large number of results, run them during off-hours or when server usage is light.

Widgets with multiple pages of results place additional demand on the server, while dashboard users are unlikely to click through all of those results. The same applies to widgets based on BIRT reports or those returning a large number of results. Ensure your dashboard widgets provide a relatively small result set. For dashboards with high or frequent use, avoid including widgets based on BIRT reports or those returning a large number of results; alternatively, put them on low use tabs.

Data aggregation reports (such as the BIRT RTC Timesheet and RQM Test Execution reports) and some time series or trend reports can take longer to run, depending on the amount of historical data in the data source. Using larger time intervals increases the load on the server, although repository size can also be a factor. Limit the time interval for trend reports, and ensure you test the performance in a “worst-case scenario”.

See BIRT Reporting Guidelines developed by Matthias Buettgen.

Related topics: Best Practices for CLM Usage Models
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