Power BI Service Refresh took more than expected time

[Kasunpathirana]

I have one issue where the refresh usually starts at 7 p.m. and ends at 7:15 p.m. or earlier.

But suddenly there was a change it started as usually 7:01 p.m. but ended it on 9:00 p.m.. 

I want to know what are the reasons for this and what is the usual SLA committment for the refresh time given it has been started.

[v-piga-msft]

Hi @Kasunpathirana,

There are many factors may affect the refresh time, such as your large dataset or the network.

Is your dataset online source?

In addition, you could have a reference of this article.

Best Regards,

Cherry

[Kasunpathirana]

Thanks @v-piga-msft for the reply. 

Dataset is not so large doesn't take much time 2-3 minutes to refresh if refresh manually. 

I'm using a gateway to connect to the SQL datasource. 

Can help me to tell what could be the possible reasons in this case.