When setting up a run of tests allow the user to apply a filter to the output to the log file allowing them to filter on
1. Duration
2. OK/Warning/Error
3. Ranges of Request ID/ Time period/ Call Types/ Machine/ Test/ and so forth
This will reduce unwanted data, allow tests to be for longer before exceeding log file size limitations.
In addition, when the data is exported, the data will be ready for processing and require less time to use.