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

Register now to learn Fabric in free live sessions led by the best Microsoft experts. From Apr 16 to May 9, in English and Spanish.

Reply
Anonymous
Not applicable

Performance problems with moving average (over a index)

Hello, I have a problem with the calculation time when determining a moving average( not via date values, but via an index). The table is loaded into Power BI.
The table has about 100,000 rows and about 80 columns.
I calculate a moving average (calculated column) using:

 
Moving Average =
VAR MyIndex = RRK_A[Index]
VAR Window_A = 299
VAR myResult =
SUMX(
FILTER(
RRK_A,
RRK_A[Index] > MyIndex-Window_A &&
RRK_A[Index] <= MyIndex
),RRK_A[RRK_A_FLAG]
)
RETURN FIXED(myResult,2)
 

Further I use a MEASUR:

Moving1 =
VAR currentIndex = MAX('RRK A'[Index])
VAR Grenze = 10
VAR movingAverage = CALCULATE(SUM('RRK A'[RRK_A_flag]), FILTER(ALLSELECTED('RRK A'), 'RRK A'[Index] > currentIndex -
Grenze && 'RRK A'[Index] <= currentIndex))
return movingAverage

 


Does anyone have an idea how I can improve the performance?
Thanks for help

1 ACCEPTED SOLUTION
3 REPLIES 3
lbendlin
Super User
Super User

Use DAX Studio to study the query plan generated by your measures.  Change your measures to reduce the number of records/iterations in the query plans.

Anonymous
Not applicable

Thank you for your advice lbendlin.
But unfortunately I don't know what you mean by that?
Can you perhaps give me a hint?

Thanks Friedbert

Helpful resources

Announcements
Microsoft Fabric Learn Together

Microsoft Fabric Learn Together

Covering the world! 9:00-10:30 AM Sydney, 4:00-5:30 PM CET (Paris/Berlin), 7:00-8:30 PM Mexico City

PBI_APRIL_CAROUSEL1

Power BI Monthly Update - April 2024

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

April Fabric Community Update

Fabric Community Update - April 2024

Find out what's new and trending in the Fabric Community.