[ovs-build] Passed: ovsrobot/ovn#464 (series_164212 - 4406e59)
builds at travis-ci.com
Fri Mar 13 14:20:11 UTC 2020
Build Update for ovsrobot/ovn
Duration: 19 mins and 32 secs
Commit: 4406e59 (series_164212)
Author: Lucas Alvares Gomes
Message: Avoid nb_cfg update notification flooding
nb_cfg as a mechanism to "ping" OVN control plane is very useful
in many ways. However, the current implementation will trigger
update notifications flooding in the whole control plane. Each
HV updates to SB the nb_cfg number and all these updates are
notified to all the other HVs, which is O(n^2). Although updates
are batched in fewers notifications than n^2, it still generates
significant load on SB DB and also on ovn-controllers.
To solve this problem and make the mechanism more useful in large
scale producation deployment, this patch separates the per HV
*private* data (write only by the owning chassis and not
interesting to any other HVs) from the Chassis table to a separate
table, so that each HV can conditionally monitor and get updates
only for its own record.
Test result shows great improvement:
In a test environment with 1K sandbox HVs, and 10K ports created
on 40 lswitches and 8 lrouters, do the sync test when the system
is idle, with command:
time ovn-nbctl --wait=hv sync
With this patch:
Also, regarding backwards compatibility note that the nb_cfg from the
Chassis table is no longer updated. If any system is relying on this
mechanism they should start using the nb_cfg from the Chassis_Private
table from now on.
Co-authored-by: Han Zhou <hzhou8 at ebay.com>
Signed-off-by: Han Zhou <hzhou8 at ebay.com>
Signed-off-by: Lucas Alvares Gomes <lucasagomes at gmail.com>
Signed-off-by: 0-day Robot <robot at bytheb.org>
View the changeset: https://github.com/ovsrobot/ovn/compare/cd4843cf10ff^...4406e59e74e3
View the full build log and details: https://travis-ci.com/github/ovsrobot/ovn/builds/153194718?utm_medium=notification&utm_source=email
You can unsubscribe from build emails from the ovsrobot/ovn repository going to https://travis-ci.com/account/preferences/unsubscribe?repository=9136199&utm_medium=notification&utm_source=email.
Or unsubscribe from *all* email updating your settings at https://travis-ci.com/account/preferences/unsubscribe?utm_medium=notification&utm_source=email.
Or configure specific recipients for build notifications in your .travis.yml file. See https://docs.travis-ci.com/user/notifications.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the build