One practice might be that you schedule the Performance Measurement tool to run each night. Make changes based on the documentation that you find and then review the results of the performance measurement tool for improvement.

sql-server-on-vmware-best-practices-guide.pdf - Guide successfully used by customers to increase performance

VMwareVSphereConsolePowerSettings.pdf - Specific power settings in vSphere used by a customer

best_practices_for_virtualizing_and_managing_sql_server_2012.pdf - Best practices found online related to SQL server also referencing Hyper-V