[ovs-dev] [PATCH ovn branch-21.09 0/3] Improve Load Balancer performance.
numans at ovn.org
Wed Nov 3 20:11:49 UTC 2021
On Tue, Nov 2, 2021 at 3:35 PM Dumitru Ceara <dceara at redhat.com> wrote:
> On 11/2/21 8:30 PM, Dumitru Ceara wrote:
> > This series backports the load balancer performance improvements to
> > stable branch-21.09.
> > - patch 1/3 changes the way ARP responder flows are generated for load
> > balancer VIPs, using an address set, making SB updates incremental
> > and also reducing memory usage on the SB server side.
> > - patch 2/3 introduces a new feature, Load_Balancer_Group, which
> > simplifies load balancer configuration in large scale scenarios and
> > at the same time improves performance due to the large reduction in
> > database refereces between rows.
> > - patch 3/3 is a follow up fix of a bug originally introduced by
> > patch 1/3.
> > Usually new features and performance fixes are not to be backported to
> > stable branches, however due to the (mis)alignment of upstream and
> > downstream release schedules, and due to the fact that ovn-kubernetes
> > requires a database table to be part of a schema that's tagged in a
> > release in ovn-org/ovn repo, if load balancer groups would be available
> > only starting with v21.12.0 then downstream ovn-kubernetes (and OpenShift)
> > will not be able to consume the feature for two release cycles (~6 months).
> > On the other hand the feature itself is quite contained, doesn't break
> > backwards compatibility, and, when used, hugely improves some CMSs
> > (OpenShift) load balancer use cases.
> > Dumitru Ceara (3):
> > northd: Use address sets for ARP responder flows for VIPs.
> > nb: Add support for Load_Balancer_Groups.
> > northd: Always generate valid load balancer address set names.
> > NEWS | 2
> > northd/northd.c | 334 +++++++++++++++++++++++++++++++++----------------
> > ovn-nb.ovsschema | 24 +++-
> > ovn-nb.xml | 37 +++++
> > tests/ovn-northd.at | 293 ++++++++++++++++++++++++++++++++++---------
> > utilities/ovn-nbctl.c | 3
> > 6 files changed, 517 insertions(+), 176 deletions(-)
> Adding OVN maintainers explicitly in order to discuss the possibility of
> including this in a v21.09.1.
+1 from me for the backports.
> dev mailing list
> dev at openvswitch.org
More information about the dev