Nick, We were using xencenter 6.0 (2.6.32.12-0.7.1.xs6.0.0.531.170662xen) => xen 4.1.0 + native bridging. With this case 4 (guest VM tagging) doesn't work.
-vijay On Fri, Jan 20, 2012 at 8:09 AM, <[email protected]> wrote: > I have gotten Case 4 to work with KVM & Ubuntu with native bridging. > > What distro are you using? > > .nick > - > Nicholas Weaver > Mobile: 817.914.6166 | Email: [email protected]<mailto: > [email protected]> > Blog: nickapedia.com<http://nickapedia.com/> | Twitter: @lynxbat< > http://twitter.com/lynxbat> > > > From: Vijay Chander <[email protected]<mailto: > [email protected]>> > Date: Thu, 19 Jan 2012 21:31:24 -0500 > To: "[email protected]<mailto:[email protected]>" < > [email protected]<mailto:[email protected]>> > Subject: [ovs-discuss] Performance of openvswitch versus linux bridging > with XEN > > We are having performance issues with XEN as opposed to VMWARE. > > Pls take a look at the following cases (OVS - open vswitch, Bridge - > native linux bridging) > > Case 1 (no VM guest tagging): VM1 VNIC1 ---- (no tag) --- OVS > ---(vlan X) --- PNIC1 ------(vlan X)--------- PNIC2 ---- (vlan X) > ---- OVS --- (no tag) --- VNIC2 ---- VM2 > Case 2 (no VM guest tagging): VM1 VNIC1 ---- (no tag) --- Bridge > ------ PNIC1 ------(vlan X)--------- PNIC2 ---- (vlan X) ---- > Bridge --- (no tag) --- VNIC2 ---- VM2 > Case 3 (VM guest tagging): VM1 VNIC1 ---- (vlan X) --- OVS > ---(vlan X) --- PNIC1 ------(vlan X)--------- PNIC2 ---- (vlan X) > ---- OVS --- (vlan X) --- VNIC2 ---- VM2 > Case 4 (VM guest tagging): VM1 VNIC1 ---- (vlan X) --- Bridge > ---(vlan X) --- PNIC1 ------(vlan X)--------- PNIC2 ---- (vlan X) > ---- Bridge --- (vlan X) --- VNIC2 ---- VM2 > > Case 4 does not work. So we moved to using OVS (open vswitch) because Case > 3 works. > > But performance for Case 2 is much better than performance for Case 1. > This is making us think > about using bridging instead of open vswitch. Any reason why this is the > case ? > > Has anyone done some benchmarking with xen+bridging and xen+open vswitch ? > Pls > point me to the results if they are available online. > > Also can someone pls point me to the data path architecture info for the > open vswitch ? > > I understand that open vswitch can be deployed in user mode or kernel > mode. We are > mainly interested in kernel mode deployment for perf reasons. > > We are even considering building the whole thing pulling in the fixes > ourselves as opposed to using > the stuff that comes with xencenter 6.0 from citrix. > > Any pointers will be great. > > Thanks, > -vijay > > _______________________________________________ > discuss mailing list > [email protected] > http://openvswitch.org/mailman/listinfo/discuss >
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