Performance Using a Rule

Mike,

a Rule by itself would never cause a delay in order of seconds. Application of a rule however makes your virtual server use so called "late binding", i.e. do TCP handshake on behalf of the server, accept enough data (in your case the request line) in order to make loadbalancing decision and only then establish connection to the server. So, the BIG-IP surely does more work, but the observer difference is in the order of 100 microseconds or miliseconds, not 10 seconds. I believe the root cause for the delay must be elsewhere. You need to collect packet captures both on client- and server-side and look what's going on. You should contact F5 support, if you cannot resolve the problem yourself.

Although the rule is almost certainly not causing your performance problems, it can be optimized (slightly) by using a class, like this:

class test {
   "test2"
   "test3"
}
rule test_redir {
   if(http_uri contains "testing") {
       redirect to "https://%h/%u"
   }
   else if(http_uri contains one of test) {
       use pool Test-Pool1   
   }
   else {
       use pool Prod-Pool
   }
}