Скачать или смотреть Cloud Testing with Agile Load

Performance / load testing from the cloud has many benefits.
Cloud load and performance testing enables low cost execution of very large tests without having to invest in large infrastructures by using Amazons redundant data centres.
Furthermore cloud based load and performance testing allows load generation from around the world to simulate users in other countries thereby testing the entire end to end infrastructure including your gateways, load balancers and the internet. An understanding can be gained of end user experience and contracting between local and very remote users will show the sum total of the effects of jitter, latency and bandwidth issues.

More tutorials can be found here : http://www.agileload.com