Useful websites for Performance Testing Related...

Performance Testing:

Software Performance Testing

http://msdn.microsoft.com/

http://www.perftestplus.com/

apmdigest.com

http://performance-testing.org/

http://northwaysolutions.com

http://www.opensourcetesting.org/


HP LoadRunner:

http://www8.hp.com

www.wilsonmar.com

http://myloadtest.com/

http://learnloadrunner.com/

http://motevich.blogspot.com

http://www.iloveloadrunner.com/

http://www.guru99.com/

http://www.joecolantonio.com


Apache JMeter:

http://jmeter.apache.org/