Forum Discussion
George_Watkins_
May 12, 2012Historic F5 Account
Double check your key sizes and make sure that you're not using 4096-bit keys. Only 512, 1024, and 2048-bit are handled by the Cavium chip. 4096-bit keys are selectable from the Web UI, but will not be offloaded and will instead be handled by the x86 processor. This can cause performance degradation under load. This article indicates that keys larger than 4096-bit will use software encryption : SOL10580: Change in Behavior: Maximum supported key size for BIG-IP Client SSL and Server SSL profiles.
-George