The Log and Trace Analyzer provides two methods of loading log resources into the workspace. The default method uses zipped XMI files to persist the imported log data into workspace, and the alternate method, large log support, uses a local or remote database to store the log resources as they are imported into the workspace.
A log resource is active when it is loaded into memory by any action that results in displaying the log resource in a view. The large log support mode should be used when working with active log files whose combined size on import is greater than 4% of the total Java heap size(default size is 512MB). This recommendation is based on tests performed on a Pentium III (1GB RAM, 1GHZ CPU) running the Log and Trace Analyzer.
XMI and large log support should not be used together in a single session. Mixing the two modes of operation may not perform as well as using a single mode operation. Using a combination of the modes may result in performance degradation and excess memory consumption. To avoid using both modes simultaneously when working with log files, follow these guidelines:
Related tasks
Enabling large log support for the Log and Trace Analyzer
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