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Bug 1772106

Summary: Neutron List Ports API regression
Product: Red Hat OpenStack Reporter: Sai Sindhur Malleni <smalleni>
Component: python-openstackclientAssignee: Rodolfo Alonso <ralonsoh>
Status: CLOSED ERRATA QA Contact: Eran Kuris <ekuris>
Severity: medium Docs Contact:
Priority: medium    
Version: 16.1 (Train)CC: amuller, apevec, asoni, asyedham, atragler, bcafarel, bhaley, chrisw, dalvarez, dhill, jpichon, jraju, jschluet, lhh, lpeer, molasaga, njohnston, psuriset, racedoro, ralonsoh, sclewis, scohen, skaplons, stchen, vkommadi
Target Milestone: ---Keywords: Reopened, Triaged
Target Release: ---Flags: vkommadi: needinfo-
vkommadi: needinfo-
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: python-openstackclient-4.0.1-1.20200817092224.el8ost Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-12-15 18:35:44 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1381612    

Description Sai Sindhur Malleni 2019-11-13 16:47:29 UTC 
Description of problem:

Comparing OSP 16 with OSP 13z9, we see that API response times for listing ports is higher with OSP 16 than OSP 13. As a note OVN is being used as the ML2 backend in both cases.

Scenario run:

Create 4 ports per network and list all ports for a total of 1000 times at a concurrency of 16. As the number of ports to list increases, the time taken to list increases linearly.

Rally scenario used: https://github.com/cloud-bulldozer/browbeat/blob/master/rally/neutron/neutron-create-list-port-cc.yml

I have run several tests repeatedly to make sure this is not a one off.

         Max      95%    Average    Min
OSP 16   43.381  22.68    11.96     0.241 
OSP 13   14.759  9.842     5.205     0.159

Version-Release number of selected component (if applicable):
16

How reproducible:
100%

Steps to Reproduce:
1. Run rally scenario to create-list-ports
2. Observe results
3. Compare OSP 13 and OSP 16

Actual results:
Performance with OSp 16 is much worse than OSP 13

Expected results:
Performance should be better than or equivalent to OSP 13

Additional info:
Comment 2 Sai Sindhur Malleni 2019-11-18 21:41:16 UTC 
As a an extra data point, listing ports is signifcantly slower in OSP 16 when compared to OSP 13 even when using ML2/OVS.
Comment 3 Sai Sindhur Malleni 2020-01-08 01:44:05 UTC 
Nate, any update on this?
Comment 35 anil venkata 2020-09-24 17:53:17 UTC 
Thanks Rodolfo. We will retest and publish the results once the puddle with fixes available.
Comment 45 stchen 2020-11-04 20:10:14 UTC 
Closing EOL, OSP 16.0 has been retired as of Oct 27, 2020
Comment 57 errata-xmlrpc 2020-12-15 18:35:44 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Red Hat OpenStack Platform 16.1.3 bug fix and enhancement advisory), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2020:5413
Comment 58 Red Hat Bugzilla 2023-09-15 00:19:40 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 500 days