I have been so busy this week that I didn’t get a chance to blog about this yesterday when it happened, but I had a new article published on SQLPerformance.com that compares the performance impact or "observer overhead" of using SQL Trace and Extended Events.  I had a lot of fun running different benchmarks for this article and the results are very revealing about the overhead associated with diagnostic data collection against SQL Server under load. 

http://www.sqlperformance.com/2012/10/sql-trace/observer-overhead-trace-extended-events

I’ll be writing additional performance related articles on SQLPerformance.com in the next few months along with other members of SQLskills so make sure you add the RSS Feed to your favorite feed reader.