Hi Currently LVS scales to the maximum of different network interfaces used for moving traffic. For DR it would most likely be 1 cpu core, for NAT 2 cores. So multicore machines can't really be used effectively (most cores will be idle).
I saw "receive packet steering" patch being mentioned a few weeks back (http://lwn.net/Articles/361440/). Essentially it hashes src/dst ip/port (for tcp and udp) to select the CPU that will handle any packet (hence keeping a flow on a single CPU core). Would also allow ipvs module code to be run on multiple processors in parallel (of course, it CAN run in parallel, but usually it will just not do it currently, as the incoming packets from an interface will be handled sequentially)? I'd imagine that the patch should just transparently make general networking, ipvs (and netfilter) code scale to all CPU cores, unless I'm misunderstanding something about this patch. I was wondering if someone had already tried this or could speculate whether this should be the case? Thanks, Siim _______________________________________________ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - [email protected] Send requests to [email protected] or go to http://lists.graemef.net/mailman/listinfo/lvs-users
