On Tue, Feb 27, 2018 at 03:56:40PM +0100, Daniel Alvarez Sanchez wrote: > Hi all, > > When working on the performance of the OVN OpenStack integration and > following up this thread [0]. > > I went a bit deeper trying to find out the root cause of the linear growth. > It happens that during the processing of the update2 messages, when there's > a 'modify' operation, the data is converted to JSON [1] and then we build a > Row from this JSON [2]. > > This seems pretty useless and, since the JSON document is not used anywhere > else, I just avoided that conversion. This conversion takes longer as the > number of elements in the row increases, which is the case of adding a new > address to the Address_Set table or adding new ACLs to the acl column in > Logical_Switch. This have a big impact at scale and it can be easily fixed. > > After removing the extra conversions (I'll be submitting the patch in a > while), the time for creating ports from OpenStack remains almost constant > regardless of the amount of ports in the system as you can see in the > attached image and further in this blogpost [3] and it's cut down > considerably.
Great detective work! _______________________________________________ discuss mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
