In the statistics menu you have some insights about the performance and the impact of the uMarketingSuite. On this page you see when the last pagevisit was stored and what the size of the raw data table is.
You also see the average processing speed per pageview, the number of unprocessed records, the number of errors and the total table size of the processed data.
Remember that data is collected and stored first (which is done really quick in a batch) and processed later. The time between storage and processing can be setup with the configuration file of the uMarketingSuite.