Before I discuss the most important wait type list , I want to say that really there is no definitive list of most important sql wait types. Understanding what is normal and the context of the wait type is essential when discussing wait types. For example , you may see the sql wait type WRITELOG as high on the list of waits on a SQL Server. This may or may not be important depending on the "normal" behaviour. Benchmarking your systems is a great way of understanding the patterns your systems. Based on monitoring and analysing various SQL Server performance... Read more →