Blackbird - NB:Intent Throughput

Reference: 

• for Test Plan see: Test Plan - Perf & Scale-out; 
• ONLabTest script - https://github.com/opennetworkinglab/ONLabTest: IntentEventTP

Test Setup:

• RC2 - commit# f6a731a350138c06723d283a647262073dd0168b
• Using "app-intent-perf" as load generator; 10 Null Devices on each node;
• Bare-metal Servers: dual-Xeon E5-2670, 32GB DDR3 RAM, SSD, Cluster Network is 1Gbps
• JAVA_OPTS="${JAVA_OPTS:--Xms8G -Xmx8G}"
  
  

Test Procedure:

1) Run "app-intent-perf" on all nodes for 180 seconds;

2) Obtain install/remove throughput results from log (Overall Throughput, Ops = install + withdraw) on each node at the end;

3) scale cluster from 1 to 3, 5, 7 nodes, aggregate all nodes results as the cluster system throughput.

Result:

Result Discussion:

1. "app-intents-perf" only generate intents of "1-hop" intents, i.e. all intents are from a port of a switch to another port of the same switch;
2. With numNeighbors set to 0, all intents/flows installed from a node are for local switches. With "numNeighbors" set to "all", these are the cases where the installed intents have neighbors of all active nodes in the cluster. For instances, with 3-node cluster test, the installed intents from each node will have neighboring of other two nodes - configuration wise, numNeighbors = 2. 
3. As shown from the results, Intent installation performance scales up with number of nodes in the cluster.