It seems like questions always come up about how to monitor memory.  But each time the question comes up, it’s slightly different.   Here’s a sort of FAQ for memory questions:   1.  How can I figure out memory and CPU consumption by database? a.  In SQL Server 2005, DMVs are of course the way to go.  Pre-SQL ...

You might encounter a situation, under a very heavy workload, where processing for certain transactions starts out very efficiently, but over time becomes much less efficient.    A good place to start troubleshooting is, of course, PerfMon.  But PerfMon can fail to reveal the culprit, since the CPU can remain stable and moderate ...