What is the specification of the machine you are running Tableau Server on? Also what is the data source type? (i.e. SQL, Postgres, CSV?)
We've recently upgraded to v10.1.1 and have had some feedback from users that they generally feel things are 'slower'. I've seen the known issues list has some references to performance & extracts so we may need to look to move to a higher version. Will be useful to hear what you get back from support as for us, upgrading to a 10.1.x version is the same process as upgrading to a more major release (we're a single server environment), with regard to the resource & downtime we need to plan with the business.
We typically use server data sources, the majority of which connect to SQL Server. Some of these data sources are extracted onto the server, some are connect live. Some workbooks will then extract further with the aim to improve performance.
@Vishal, It is a single server 16 core with windows 2012. 128GB ram. I don't see any spike in CPU or RAM.
The sources are tableau extracts connecting to SQL server.
I'm interested in what supports tells you. Please post back on the forums when you find more detailed info.