statistics: concurrency init stats (#51403)

[ti-chi-bot]

This is an automated cherry-pick of #51403

What problem does this PR solve?

Issue Number: close #52102

Problem Summary:

What changed and how does it work?

Now we init stats by single goroutine. it is slow. so that we create concurrency init stats to speed up.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

before

[2024/03/26 08:08:59.917 +00:00] [INFO] [domain.go:2286] ["init stats info time"] [lite=true] ["take time"=797.217483ms]
[2024/03/26 08:42:35.866 +00:00] [INFO] [domain.go:2286] ["init stats info time"] [lite=false] ["take time"=1m17.384163872s]

after

[2024/03/26 08:25:43.158 +00:00] [INFO] [domain.go:2292] ["init stats info time"] [lite=true] ["take time"=646.48434ms]
[2024/03/26 08:39:04.435 +00:00] [INFO] [domain.go:2292] ["init stats info time"] [lite=false] ["take time"=28.20059188s]

• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-7.5@a0a5e99). Click here to learn what that means.
The diff coverage is 79.2207%.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #52261   +/-   ##
================================================
  Coverage               ?   71.9727%           
================================================
  Files                  ?       1409           
  Lines                  ?     409237           
  Branches               ?          0           
================================================
  Hits                   ?     294539           
  Misses                 ?      94862           
  Partials               ?      19836           

Flag	Coverage Δ
unit	71.9727% <79.2207%> (?)

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

Components	Coverage Δ
dumpling	53.9913% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.3399% <0.0000%> (?)

[easonn7]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, easonn7, hawkingrei

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Needs approval from an approver in each of these files:

• OWNERS [AilinKid,hawkingrei]
• pkg/config/OWNERS [easonn7]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-01 00:15:50.765240466 +0000 UTC m=+230212.292781013: ☑️ agreed by hawkingrei.
• 2024-04-01 01:38:53.513779004 +0000 UTC m=+235195.041319550: ☑️ agreed by AilinKid.