https://jira.opendaylight.org This file is an XML representation of an issue en-us 8.20.10 820010 22-06-2022 https://jira.opendaylight.org/browse/OPNFLWPLUG-254 OpenFlowPlugin <p>The performance of the cbench loopback through the data store (dropAllPackets) is very bad (1-2 operations per second). The poor performance is not related to the data store itself, as other data store benchmarks keep performing well.</p> <p>To reproduce, issue 'dropAllPackets on' on the osgi console and run the cbench test.</p> <p>Operating System: Mac OS<br/> Platform: Macintosh</p> OPNFLWPLUG-254

cbench data store performance very poor

Bug Resolved Done Jan Medved Jan Medved Tue, 26 Aug 2014 23:34:34 +0000 Mon, 27 Sep 2021 09:01:18 +0000 Tue, 18 Nov 2014 13:36:12 +0000 General 0 5 <p>The performance is not as poor as it looks: there are for example 400 flowMod messages reported by cbench but we sent 50000 of them. Problem is that cbench does not count floMod with modify command but only with add command. </p> <p>I suspect that new dataStore API introduced this behavior:</p> <p>Write 1. flow into DS/config:</p> <ul class="alternate" type="square"> <li>get corresponding addFlow dataChangeEvent<br/> Write 2. flow into DS/config:</li> <li>get corresponding addFlow dataChangeEvent</li> <li>get update for 1. flow (original == updated flow)<br/> Write 3. flow into DS/config:</li> <li>get corresponding addFlow dataChangeEvent</li> <li>get update for 1. flow (original == updated flow)</li> <li>get update for 2. flow (original == updated flow)<br/> etc..</li> </ul> <p>So the amount of flowMod messages physically sent to node grows linear and for 320 flows we should have 51360 messages sent. </p> <p>This can be simulated in both openflowplugin distributions (cbench, base) regardless the dropAllPacket* is turned on or off. And with mininet running on OF-1.0 or OF-1.3.</p> <p>Michal to retest.</p> <p>Well, this would mean that we create a flood of flowmods for every new flow added - that's still a very bad behavior</p> <p><a href="https://git.opendaylight.org/gerrit/#/c/11458/" class="external-link" target="_blank" rel="nofollow noopener">https://git.opendaylight.org/gerrit/#/c/11458/</a></p> <p>no response</p> Development External issue ID 1626 External issue URL ODL SR Target Milestone Rank 0|i0300n: