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Worst-Case Testing for Direct Lake Semantic Models

Chris Webb updates a prior post:

Two years ago I wrote a detailed post on how to do performance testing for Direct Lake semantic models. In that post I talked about how important it is to run worst-case scenario tests to see how your model performs when there is no model data present in memory, and how it was possible to clear all the data held in memory by doing a full refresh of the semantic model. Recently, however, a long-awaited performance improvement for Direct Lake has been released which means a full semantic model refresh may no longer page all data out of memory – which is great, but which also makes running performance tests a bit more complicated.

Read on to learn more about the improvement as well as how you can still perform your performance testing.

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