Time of calculation relative to the size of the db

Hello

I have a database with versions and various scenarios. I have an estimate every night (not just an aggregation) that runs on a scenario and version. As other versions and scenarios have been created, the size of the database has grown up a bit, and the nightly calculation every time develops new scenario/version data sets are created. Has always been my understanding that education fix limit the number of blocks in the calculation, and in theory, existing data in other intersections not being set to should have nothing to do with the calculation time. However, this is not my experience. I even tested out in app development by erasing all the data in 8 of the other versions and scenarios and saw my time reduced by 27%. Does anyone know why this should be? It comes to me that we save more historical copies of the data, the computing time on the active data will grow and develop.

We are currently implementing a BSO/ASO solution to reduce the data in the cube of the BSO, but I do not see why it should be necessary and want all overview of this.

Thank you

Sabrina

You can be calculate on these blocks, but the charge of these operations increases grows the database

Whenever he has to calculate on a block, it must go in the index file - find the location of the block in the .pag file, and then open the .pag file and integrate this memory block.

I am not opposed to the segregation of historical data which is not often used and which moving a cube separated from a design perspective, and it probably would be a good idea if the cycle on your calcs time take forever.

You can try and improve performance by changing the cache settings - but that is performance tuning and is beyond the scope of your original question.

-Matt

Tags: Business Intelligence

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