Forum Discussion
Optimize memory
Hi!
Please help me how to optimize, reduce the memory consumption in Power BI Desktop. I've got the message that I runned out of memory during refresh. I have a complex database with lot's of calculated columns and about 10 tables. I tried to delete the columns which are needn't but it's not enough. I'm running the 64 bit version with 8 GB.
Thank you in advance for your help!
Máté
Anonymous,
Did you have large data in your data source? Please try to uncheck "Allow data preview to download in nthe backgroup" and "Enable parallel loading of tables" and check if this issue persists or not.
Regards,
Charlie Liao
6 Replies
Hi,
Recently I experienced the same situation. Calculated columns especially when you have big amout of values in them need a lot of memory to do calculations. To avoid such situation please use measures insted of calculated comumns. They run dynamically and save a lot of memory.
One more thing which I used. You can write direct SQL Query and indicate needed fields and period when you're getting data from your database. This will get less data from DB.
Don't know if in your case you can filter data before uploading from DB.
Or you can use filters e.g. Page filters, report level filters to show less data in visual, but I'm not sure if it saves memory, maybe just run report faster.
You should try to remove unused columns (measures are more like optional) from your data model using external tools like Measure Killer
