* ML mail <mlnos...@yahoo.com> [2014-06-19 09:22]: > I have four /24 subnets and currently have one subnet per ethernet > interface (1Gbit/s) on my openbsd firewall. Now I was wondering if in > terms of performance (especially latency/pps) it is better to have one > subnet per ethernet interface like I have now or to have the four > subnets on one single interface using vlan interfaces?
in theory, having those 4 on vlans on the same hw if allows for more effective interrupt mitigation, offset by the cost of inserting the vlan header (in <= 5.5, made it essentially free after) and running through vlan_start/vlan_input. Should not make much of a difference in practice. -- Henning Brauer, h...@bsws.de, henn...@openbsd.org BS Web Services GmbH, http://bsws.de, Full-Service ISP Secure Hosting, Mail and DNS. Virtual & Dedicated Servers, Root to Fully Managed Henning Brauer Consulting, http://henningbrauer.com/
