Optimize memory

[Anonymous]

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

[Brunner_BI]

You should try to remove unused columns (measures are more like optional) from your data model using external tools like Measure Killer

[bsas]

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. 

[Anonymous]

Thanks for your reply!
I tried to do more measures but it's still the same message with not enogh memory.. Have you some other thoughts how can I reduce it?
Many thanks!

[bsas]

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.

[Anonymous]

Yes, but now I can't change the source from import to direct query and it would be really difficult to do an other report:/ 
And now I have only a few claculated columns, but it's still too many datas to refresh..

[v-caliao-msft · Accepted solution]

@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