Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

The ultimate Microsoft Fabric, Power BI, Azure AI & SQL learning event! Join us in Las Vegas from March 26-28, 2024. Use code MSCUST for a $100 discount. Register Now

Reply
Anonymous
Not applicable

Power Bi Desktop very slow

Hello,

 

I have the following laptop with a large SSD drive.

 

mrusu_1-1613774243366.png

 

I am having performance issues with Power Bi Desktop.

While memory load does not go too high, CPU usage is easily getting to 90 % -100 % when changing a measure calculation, for example. 'Working on it' message can display for approx 1 minute, very frustrating...

 

My report is based on a ~2 million records data set 

I guess I need a more performant laptop? If no, then is there any other solution?

 

Regards,

Mircea

1 ACCEPTED SOLUTION
AlexisOlson
Super User
Super User

With a dataset of that size, the most likely problem is that your DAX measures are not written efficiently and could likely perform much faster if rewritten appropriately. It's not likely that better hardware would make nearly as much difference as optimizing the measures.

 

I've had similar experiences with similarly sized tables when the logic got highly complex (or was written without performance in mind). I ended up consulting with Marco Russo to help determine exactly where the bottlenecks were in the calculations and rewriting many of them from scratch for much-improved performance.

 

Without any knowledge of your particular data model, all I can suggest is to seek out optimization information. Microsoft has some advice and sqlbi.com has great content too.

View solution in original post

2 REPLIES 2
AlexisOlson
Super User
Super User

With a dataset of that size, the most likely problem is that your DAX measures are not written efficiently and could likely perform much faster if rewritten appropriately. It's not likely that better hardware would make nearly as much difference as optimizing the measures.

 

I've had similar experiences with similarly sized tables when the logic got highly complex (or was written without performance in mind). I ended up consulting with Marco Russo to help determine exactly where the bottlenecks were in the calculations and rewriting many of them from scratch for much-improved performance.

 

Without any knowledge of your particular data model, all I can suggest is to seek out optimization information. Microsoft has some advice and sqlbi.com has great content too.

Anonymous
Not applicable

Thank you Alexis for your quick answer and detailed information!

Helpful resources

Announcements
Fabric Community Conference

Microsoft Fabric Community Conference

Join us at our first-ever Microsoft Fabric Community Conference, March 26-28, 2024 in Las Vegas with 100+ sessions by community experts and Microsoft engineering.

February 2024 Update Carousel

Power BI Monthly Update - February 2024

Check out the February 2024 Power BI update to learn about new features.

Fabric Career Hub

Microsoft Fabric Career Hub

Explore career paths and learn resources in Fabric.

Fabric Partner Community

Microsoft Fabric Partner Community

Engage with the Fabric engineering team, hear of product updates, business opportunities, and resources in the Fabric Partner Community.