iRules and ASM

Hi,

 

 

The simplest method might be to use a benchmarking program to perform load testing against your VIP with and without the HTTP class associated with the VIP (without the class, requests are not sent to ASM). Apache bench (ab) is a pretty simple benchmarking tool installed on BIG-IP. Note that you can't test from the BIG-IP to a VIP on the same unit though (this will be possible in 9.4, but not in 9.2.x).

 

 

If you want to measure the resources used by an iRule (whether it's the internal _ASM_clientside, _ASM_serverside or custom rules) you can use the timing feature. For examples try searching the 9.x rules forum for timing. AskF5 also has a couple of related solutions: SOL6228 ().

 

 

SOL3242 (Click here) and SOL6583 (Click here) detail CPU and memory allocation for TMM in 9.x and explain why top and ps don't show valid data for TMM resource utilization.

 

 

The performance graphs actually do show accurate statistics (globally) for TMM memory and CPU utilization. It might be possible to use rrdtool to gain access to the raw data used to generate the stats. I don't have any ready examples, but you can look at the rrdtool man page or contact support for more info.

 

 

Hope this helps...

 

Aaron