Forum Discussion
Tim_Hsiao_30513
Nimbostratus
NimbostratusDo custom headers incur performance overhead on Big-IP?
BIG-IP 11.6.0 Build 4.0.420 Hotfix HF4
We have added an iRule to add http headers from incoming requests so that our application can capture client certificate information:
when CLIENTSSL_HANDS...
Hi!
Always good to cover all bases, good thinking!
You have two events here
- CLIENT_SSL_HANDSHAKE - Occurs once per connection
- HTTP_REQUEST - Occurs once per request
Since the performance impact is dependent on both connections and requests it's hard to answer your question as one connection could carry 1, 1000 or more requests per second. Also, knowing which platform you're running this on would also be helpful. :)
That said, the F5's are very efficient when it comes down to header manipulations and SSL should be hardware accelerated (unless you're running a VM) so you should be in the clear.
Hope that somewhat answered your question!
/Patrik
