Bug 2095083 - Observe > Dashboards: Graphs may change a lot on automatic refresh
Summary: Observe > Dashboards: Graphs may change a lot on automatic refresh
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Monitoring
Version: 4.11
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: ---
: 4.11.0
Assignee: Andrew Pickering
QA Contact: Tai Gao
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-06-09 01:06 UTC by Andrew Pickering
Modified: 2022-08-10 11:17 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-08-10 11:17:00 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github openshift console pull 11667 0 None open Bug 2095083: Monitoring dashboards: Increase default graph samples from 30 to 60 2022-06-09 01:08:11 UTC
Red Hat Product Errata RHSA-2022:5069 0 None None None 2022-08-10 11:17:22 UTC

Description Andrew Pickering 2022-06-09 01:06:16 UTC
When the dashboard auto refresh is enabled, you would expect that on each refresh the graph would maintain the same shape, but shift a little to the left with the passage of time.

However, because the graph data is completely reloaded on each refresh and the query uses a relatively low sampling rate, the graph shape can actually change on each refresh. Depending on the query, there may be no change, a minor change too small to notice, or a large visible change.

Although this is not technically incorrect (we are doing correct data sampling and rendering of the graph on each refresh), depending on the graph it certain can look like a bug.

Comment 3 Tai Gao 2022-06-16 04:32:12 UTC
Release:
4.11.0-0.nightly-2022-06-15-161625

test process:
1.Open admin console, navigate to Observe->Dashboards
2.On the top right corner, select "Refresh Interval" as "15 seconds"
3.Watch graph changes for few minutes

on each refresh the graph would maintain the same shape, but shift a little to the left with the passage of time, test passed

Comment 7 errata-xmlrpc 2022-08-10 11:17:00 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 (Important: OpenShift Container Platform 4.11.0 bug fix and security update), 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/RHSA-2022:5069


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