If you want to collect performance counters from a SQL Server instance while running a load test, you can do this easily by selecting checking the SQL counter set in the "Manager Counter Sets" dialog in the VSTS load test editor. Doing this includes the...

I've posted a new article on diagnosing problems running out of memory while running a VSTS load test: http://blogs.msdn.com/billbar/pages/diagnosing-outofmemoryexceptions-that-occur-when-running-load-tests.aspx .

Unfortunately, late last week we discovered a nasty bug with load testing in VSTS 2008 SP1 that is a regression from the original RTM version of VSTS 2008: for Web test requests that result in redirects, any think time that is specifed on the request...