Comments on: Amazon limits the bandwith of EC2 instances http://www.stottmeister.com/blog/2009/08/06/amazon-limits-the-bandwith-of-ec2-instances/ Christian Stottmeister on code, security and projectmanagement. Fri, 04 Jun 2010 07:53:13 +0200 hourly 1 By: Shlomo http://www.stottmeister.com/blog/2009/08/06/amazon-limits-the-bandwith-of-ec2-instances/comment-page-1/#comment-16451 Shlomo Thu, 06 Aug 2009 22:24:36 +0000 http://www.stottmeister.com/blog/?p=530#comment-16451 Testing ELBs by throwing a heavy load at it is not going to reveal the true behavior of the service. ELB is designed to scale up in response to load, gradually over the course of a few hours of increasing load. The reason for this behavior is because "real world" web traffic behaves the same way - it doesn't spike from 0 to 100 all within a minute, it gradually ramps up over the course of many minutes. If you test ELB by hitting it full-on with high load, it will behave badly, dropping connections. See my article on ELB's design and how to test ELB deployments. http://clouddevelopertips.blogspot.com/2009/07/elastic-in-elastic-load-balancing-elb.html Testing ELBs by throwing a heavy load at it is not going to reveal the true behavior of the service. ELB is designed to scale up in response to load, gradually over the course of a few hours of increasing load.

The reason for this behavior is because “real world” web traffic behaves the same way – it doesn’t spike from 0 to 100 all within a minute, it gradually ramps up over the course of many minutes.

If you test ELB by hitting it full-on with high load, it will behave badly, dropping connections.

See my article on ELB’s design and how to test ELB deployments.

http://clouddevelopertips.blogspot.com/2009/07/elastic-in-elastic-load-balancing-elb.html

]]>