disttask: enlarge max-concurrent-task and optimize scheduler/executor loop

[D3Hunter]

What problem does this PR solve?

Issue Number: ref #49008

Problem Summary:

What changed and how does it work?

• change WaitTask/refreshTask(both scheduler and executor)/GetTaskExecInfoByExecID to query task base only to reduce overhead
• change MaxConcurrentTask = 16

Check List

Tests

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

before this pr, if we run BenchmarkSchedulerOverhead with task-meta size = 4m and max-concurrent-task 4/8/16/32, cpu/mem is: after(The initial/middle/tail spike is caused by create-task and switch-2-next-step.):

• [ ] 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

[ti-chi-bot[bot]]

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[codecov[bot]]

Codecov Report

Merging #51241 (38a7498) into master (a84d57c) will decrease coverage by 15.6332%. Report is 19 commits behind head on master. The diff coverage is 68.6440%.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #51241         +/-   ##
=================================================
- Coverage   70.6538%   55.0207%   -15.6332%     
=================================================
  Files          1457       1569        +112     
  Lines        433839     608182     +174343     
=================================================
+ Hits         306524     334626      +28102     
- Misses       108056     250668     +142612     
- Partials      19259      22888       +3629     

Flag	Coverage Δ
integration	37.2094% <44.0678%> (?)
unit	70.8251% <67.8571%> (+0.3917%)	:arrow_up:

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	51.3844% <ø> (+5.5397%)	:arrow_up:

[D3Hunter]

/retest

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[D3Hunter]

/retest

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[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: okJiang, ywqzzy

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Needs approval from an approver in each of these files:

• ~~OWNERS~~ [okJiang,ywqzzy]
• ~~pkg/disttask/OWNERS~~ [ywqzzy]

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[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2024-02-26 10:09:41.483831146 +0000 UTC m=+870270.231454271: :ballot_box_with_check: agreed by okJiang.
• 2024-02-27 02:09:12.254645304 +0000 UTC m=+927841.002268415: :ballot_box_with_check: agreed by ywqzzy.

[D3Hunter]

/retest

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[D3Hunter]

/retest

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[D3Hunter]

/retest

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