pkg: fix bugs that the report interval equals the avg interval

[bufferflies]

What problem does this PR solve?

Issue Number: Close #6301

What is changed and how does it work?

the equal always be true if the report interval is equal the avg interval

pd/pkg/movingaverage/avg_over_time.go

Lines 87 to 91 in ce053eb

	for aot.intervalSum-aot.margin.interval >= aot.avgInterval {
	aot.deltaSum -= aot.margin.delta
	aot.intervalSum -= aot.margin.interval
	aot.margin = aot.que.PopFront().(deltaWithInterval)
	}

Check List

Tests

• Unit test

Code changes

Side effects

Related changes

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• lhy1024
• nolouch

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[bufferflies]

/check-issue-triage-complete

[codecov]

Codecov Report

Patch coverage: 60.00% and project coverage change: -0.07 ⚠️

Comparison is base (dc5cfeb) 75.13% compared to head (c05bfb2) 75.06%.

❗ Current head c05bfb2 differs from pull request most recent head 68c9584. Consider uploading reports for the commit 68c9584 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6302      +/-   ##
==========================================
- Coverage   75.13%   75.06%   -0.07%     
==========================================
  Files         404      404              
  Lines       39700    39689      -11     
==========================================
- Hits        29827    29791      -36     
- Misses       7270     7289      +19     
- Partials     2603     2609       +6     

Flag	Coverage Δ
unittests	75.06% <60.00%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/movingaverage/avg_over_time.go	94.44% <60.00%> (-1.64%)	⬇️

... and 32 files with indirect coverage changes

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[lhy1024]

aot.GetInstantaneous() should also return rate.

[nolouch]

/merge

[ti-chi-bot]

@nolouch: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: ccb9fbf

[ti-chi-bot]

@bufferflies: Your PR was out of date, I have automatically updated it for you.

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