We have sql server 2008 R2 in production, have started evaluating sql server 2012 on a test server.
The test server has more memory and cores compared to the production server.
The databases and ETL process on the test server are the same as in production, but I see the CPU and memory usage maxed out close to 100% on the test server. All the ETL process are taking almost double the time on test server as compared to production.
What needs to be fixed?