Additional Links:

PerfMon Objects, Counters, Thresholds, & Utilities for SQL Server
http://blogs.msdn.com/b/jimmymay/archive/2008/10/15/perfmon-objects-counters-thresholds-utilities-for-sql-server.aspx


SQL Server Performance Counters of Interest
http://www.quest.com/backstage/images/promotions/SQLServer-Perfmonance-Poster.pdf


A Second in the Life of a Query Operator
http://bradsruminations.blogspot.com/2010/11/second-in-life-of-query-operator.html

