Due to a ransomware attack, the wiki was reverted to a July 2022 version. . We apologize for the lack of a more recent valid backup.

Have questions? Stuck? Please check our FAQ for some common questions and answers.

1.14: Experiment A&B - Topology (Switch, Link) Event Latency

Created by You Wang, last modified by Jeremy Ronquillo on Aug 27, 2018

System Env:

Server: Dual XeonE5-2670 v2 2.5GHz; 64GB DDR3; 512GB SSD
System clock precision is +/- 1 ms
1Gbps NIC
JAVA_OPTS="${JAVA_OPTS:--Xms8G -Xmx8G}"

ONOS Apps:

drivers, metrics, openflow

ONOS Config:

cfg set org.onosproject.net.topology.impl.DefaultTopologyProvider maxEvents 1
cfg set org.onosproject.net.topology.impl.DefaultTopologyProvider maxBatchMs 0
cfg set org.onosproject.net.topology.impl.DefaultTopologyProvider maxIdleMs 0

Test Procedure:

switch event generate on ONOS1 by connecting ovs switch to it;
record tshark (tcp syn-ack) and graph event timestamp to calculate differences.

Note: Error bars in the graphs below represent standard deviations. Only the upper error bars are shown.

automated