Google App Engine application instance recycling and response times

Question

I posted this on GAE for Java group, but I hope to get some answers here quicker :)

I decided to do some long-run performance tests on my application. I created some

Answer 1

in case folks live in AE-land and want a quick-and-dirty keep-alive pinger, this one works like a charm (windows):

http://www.coretechnologies.com/products/http-ping/