How to calculate VSX CoreXL instance for network traffic load

[Kosin_Usuwanthi]

Hi 

I have plan to upgrade vsx cluster (VSLS mode) and re-disign about CoreXL instance on vsx. The existing version is R80.20 and assign 10 CoreXL per vs. 

For the gateway that have 24 physical CPU  How to calculate CoreXL instance assign to each vs and should I enable SMT if existing configuration is disable.

Thank You

[emmap]

It depends on many things - policy, enabled blades, traffic mix, all of that. Better to run it up with your current configuration and reduce it after monitoring per VS CPU usage for a while if you have more CXL/VS than necessary. 

SMT will likely automatically enable during the upgrade, I'd generally recommend leaving it on. 

[AkosBakos]

Hi @Kosin_Usuwanthi 

Yes, this is the recommended path...

Don't forget of keep in mind, changing this kind of parameters on the VS cause a small outage.

Akos