F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

Forum Discussion

Chris_Phillips's avatar
Chris_Phillips
Icon for Nimbostratus rankNimbostratus
Jun 22, 2012

Real life benefits of bypassing ASM

So I've inherited a 5 year old LTM / ASM cluster with a lot of old rules which have mostly been kicked along over various versions and architectural changes over that time.     I have a rule whi...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Jun 22, 2012
Hi Acidkewpie,

 

 

That iRule to disable ASM for static content was used when the ratio of ASM units to load was much lower. We were trying to transfer some of the load from ASM to TMM back when they used separate CPUs.

 

 

Since you have much more capacity with the current architecture, I would either pass all of the static content requests through ASM or add RAM cache. RAM cache works really well with ASM in that the first requests for static content are passed through ASM and then cached for future requests.

 

 

sol8216: Configuring RAM Cache for use with a BIG-IP ASM-enabled virtual server

 

https://support.f5.com/kb/en-us/solutions/public/8000/200/sol8216.html

 

 

Aaron