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WVonk's avatar
WVonk
Frequent Visitor
7 years ago

Composite model slow vs fast

Hi!   I'm testing the composite model for a business issue for a customer of ours.   Situation:   DQ: 1 Fact table with 174 rows   In memory: dimension Debtor: 7750 rows dimension Part: 60...
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v-piga-msft's avatar
v-piga-msft
Resident Rockstar
7 years ago

Hi WVonk,

 

If I understand your sceanrio correctly that the dimension Part runs fast than the dimension Debtor?

 

If it is, I'm afraid that the performance will be affected by many factors. If you have more columns of dimension Debtor then the dimension Part, the performance of dimension Debtor will be bad than the dimension Part.

 

In addtion, the complex of the measure will also affect the performance.

 

Best Regards,

Cherry

WVonk's avatar
WVonk
Frequent Visitor
7 years ago

Hi v-piga-msft 

 

Thats correct, the Part dimension is always much faster than the debtor. Even when i only load 1 collumn from the Debtor dimension. 

 

I found out that when switch all three tables to DirectQeury, it's all fast. When i switch the Fact to DQ everything with the Debtor dimension is slow. 

 

In Dax studio, a simple sum measure. With the PartID around 60 milliiseconds and with the Debtor ID around 800 ms tot 33 seconds. 

 

Is there anything i can futher investigate regarding this?