All, today during the WAS CAB meeting a question came up about a WebSphere Performance Cookbook. 
Here is a quick link and I am also working with our performance architect to get you more info. 

IBM WebSphere Application Server Performance Cookbook - Home

I hope this helps!

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Claudia Beisiegel
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The WebSphere Application Server Performance Cookbook is a collection of best practices and recommendations for optimizing the performance of IBM WebSphere Application Server (WAS). You can find this cookbook on the IBM developerWorks website. Here is the direct link to the cookbook:

https://www.ibm.com/developerworks/websphere/library/techarticles/0507_woolf/0507_woolf.html

The cookbook covers various topics such as WAS configuration, JVM tuning, monitoring, and troubleshooting. It also provides sample scripts and tools to help you implement the recommended practices.

I hope this helps!

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Habib Raja
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