Auto scaling takes time to execute the rules

Question

Hi,
I am using the windows azure application. In that I am using the scaling feature provided into the azure portal. Here, I have configured the rule to scale up my web role instance by 1 if CPU load increases up to certain limit. and the reverse rule that for
decrementing the role instance.
However, I tried to increase my system load. and checked the scaling feature. So, here I observed that the rules gets satisfied to auto scale the role instance by 1 but it took around 12-15 min to execute it.
NOTE: I have set the rule checking time duration to 5 min.
Please help me.

Answer 1

Thank you for your response.
But I guess this will not solve my problem. Let me elaborate my problem in detail.
I have a site hosted on azure environment. To make the site performance better we are doing some research out of that one attempt we did is the performance test. So in that we are increasing the load on our site to check how it works with heavy user load.
And we observed that when web roles CPU usage goes beyond 50% then we gets lower response from our site. So get the better performance we have used the scaling feature from azure portal. and configured the rule that if CPU usage goes beyond 50% then scale
up the web role instance. Here, we observed that when CPU usage goes beyond 50% at the same time scaling doesn't triggered and we got lower response from our site and then after 12-15 min scaling rules got executed and at that time CPU usage was around 70%
but the triggered in auto scaling was for the 50% condition. In short we are experiencing delay in executing rule. Please help.