Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

RobW's avatar
RobW
Icon for Nimbostratus rankNimbostratus
18 years ago

iRule vs Profile Processing

Can anyone address the efficiency of the LTM processing iRules versus profiles? It is my understanding that iRules are processed at the OS level and profiles are either handled/processed by TMM or Pa...
Deb_Allen_18's avatar
Deb_Allen_18
Historic F5 Account
18 years ago
The code for TMM profiles is compiled in the TMM kernel, and has undergone strenuous testing & optimization to be as fast & reliable as possible, so if you can use a built-in profile option instead of an iRule, it will be more efficient.

 

 

However, SOL7125 refers specifically to HTTP classes, and I'm not sure they are any more efficient than iRules for functions such as simple HTTP redirection on client connection.

 

 

HTH

 

/deb