Another free (email-ware) eBook courtesy of Red Gate - "Practical Performance Profiling:Improving the efficiency of .NET Code"

Red Gate - Make .NET performance problems a thing of the past

"..

Free eBook: Practical Performance Profiling

• Covers the theory and practical skills necessary to analyze and improve the performance of .NET code.
• Focuses on the 20% of code defects that account for 80% of performance loss.
• Guides you through using a profiler and explains how to identify and correct performance bottlenecks.

..."

This not some little book, but a 562 page beast, Copyright, February 2012.

I don't know if this is a limited time offer, so get it while you can...

(via Tatworth - Free e-book on improving Dot Net code)