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Hello everyone,
I am running Power BI on an 8GB core i7 Thinkpad laptop, and I am experiencing memory related problems, even with smaller tables. One report with about 40k rows suddenly won't refresh and throws the following error for each table in the report, some of which consist of just a single row:
Solved! Go to Solution.
@parry2k Yes, you are exactly right! I found the error through simple trial-and-error, simply by deleting memory consuming parts of the report until refresh started working again. It turned out to be one single calculated column whose only function was to subtract a number in a row with the previous number (sorted by timestamp):
Hi @h4tt3n ,
Please refer to thie video.
https://www.sqlbi.com/tv/my-power-bi-report-is-slow-what-should-i-do/
We can use DAX sutdio or Performance Analyzer to optimize your model.
@h4tt3n so what you are saying it is just a simple table with 40k rows and you are running in memory limit. Do you have any DAX expression/visuals that is done?
Can you try new power bi report, just load the table without any dax etc and see what happens.
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Yes, that is exactly what is happening.
There are some DAX measures and calculated columns, and there are some visuals with slicers. I'll try copying the entire report and deleting at least the visuals, since everything table wise will still work without them. My problem is that I can't even apply the memory saving changes in the query editor, because there isn't enough memory for the save & upload - it throws an error and aborts. So I'm stuck with the querys I have, for now.
Cheers, Mike
@h4tt3n I think it is not the query, it is dax which is causing the issue. Bad written DAX or poor data model can have great impact on the performance and can slow down everything.
Subscribe to the @PowerBIHowTo YT channel for an upcoming video on List and Record functions in Power Query!!
Learn Power BI and Fabric - subscribe to our YT channel - Click here: @PowerBIHowTo
If my solution proved useful, I'd be delighted to receive Kudos. When you put effort into asking a question, it's equally thoughtful to acknowledge and give Kudos to the individual who helped you solve the problem. It's a small gesture that shows appreciation and encouragement! ❤
Did I answer your question? Mark my post as a solution. Proud to be a Super User! Appreciate your Kudos 🙂
Feel free to email me with any of your BI needs.
@parry2k Yes, you are exactly right! I found the error through simple trial-and-error, simply by deleting memory consuming parts of the report until refresh started working again. It turned out to be one single calculated column whose only function was to subtract a number in a row with the previous number (sorted by timestamp):
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