Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
The Engine > Perf trace can be used to get overall processing steps for the MDX engine, query engine, and analytic engine when executing a dossier, dashboard, or report against the MDX data source.

Enable XMLA-related logs to track the interaction between the Intelligence Server and MDX cube provider.

For MDX querying using the Strategy cube provider, ODBCOConnector-related logs can provide detailed information during the data fetching stage and determine the potential problem on the MDX cube provider.
You should be aware that with these logs enabled, there will be performance overhead introduced due to large quantities of records being logged to the disk. You should remember to disabled the entries after testing.

Different tools can be adopted to monitor the query execution time of the various data sources: