Forum Discussion

trebllaw's avatar
trebllaw
Frequent Visitor
2 years ago

Autoscale clarification

Hi,

Need clarification on the Autoscale feature on Gen2. I read that once you hit your CU limit, only 1 v-core will be added per 24 hour. Say, we set a max of 16 v-core, will it take 16 days to max out the autoscale max that we set or everytime we hit the CU (even with the additional cores), it will add another v-core?

 

Also, when the capacity normalizes, does it go back to the original v-core allocation (after 24 hours) or will it remain with the additional v-cores up until we disable the autoscale feature?

 

Another question that comes to mind is the pricing. I cant seem to find any pricing details with regards to autoscale. Does it charge on a per day basis, per month? And how much would be the pricing? Is it the same as the P SKU which is around 4995 for 8 v-cores? Do we just divide by 8 to get the price point per v-core?

4 Replies

  • Hi trebllaw 

     

    You can configure how many v-cores you want it to scale up to. So you set the limit.

     

    After 24 hours it will return back to the default. 

    The only time it will continue to use the additional v-cores is if you capacity is requiring the additional cores. I would then suggest looking at the metrics app to determine what is the cause.

     

    For the pricing I could not find anything, I would assume it might be the price divided by the 8 cores, or you could turn it on wait a day and then see the costs?

     

    Here is more information on the autoscale: Using Autoscale with Power BI Premium - Power BI | Microsoft Learn

  • fesanc's avatar
    fesanc
    Microsoft Employee

    You only pay for autoscale when it's triggered. Autoscale is triggered when interactive throttling is implemented on your capacity. When interactive operations on your capacity are delayed, autoscale v-cores are added to cover the overage. As long as the overage is not covered, v-cores are added to the capacity every 30 seconds, until the number of v-cores you allocated for autoscale is reached. Once an autoscale core is added, it remains active for a minimum of 24 hours. After 24 hours, your capacity's throttling state is evaluated and if the capacity isn't throttled, autoscale usage returns to zero.

    • GilbertQ's avatar
      GilbertQ
      Super User

      Hi fesanc 

       

      As far as I am aware autoscale only applies to Power BI Premium P SKU and not for the Fabric F SKU. If you need for capacity in Fabric you need to scale up the SKU in the Azure Portal.

      • fesanc's avatar
        fesanc
        Microsoft Employee

        Correct, has been announced as a future feature, but not released yet.