global sort: bench merge step

[ywqzzy]

What problem does this PR solve?

Issue Number: ref #48952

Problem Summary:
Add bench for merge step:

1. with ascending order kv
2. with random kv

What changed and how does it work?

On gcs with 16c machine.

bench_test.go:951: merge speed for 1258292064 bytes in 18.53020444s, speed: 64.76 MB/s
bench_test.go:951: merge speed for 1258292064 bytes in 18.243174291s, speed: 65.78 MB/s

The speed is relative slow since we haven't support parallel upload for gcs.

Check List

Tests

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

[tiprow]

Hi @ywqzzy. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[codecov]

Codecov Report

Merging #49376 (c96d2ff) into master (cf23666) will increase coverage by 0.8352%.
Report is 10 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #49376        +/-   ##
================================================
+ Coverage   71.0490%   71.8843%   +0.8352%     
================================================
  Files          1368       1411        +43     
  Lines        401711     414097     +12386     
================================================
+ Hits         285412     297671     +12259     
- Misses        96443      97622      +1179     
+ Partials      19856      18804      -1052     

Flag	Coverage Δ
integration	43.6148% <ø> (?)
unit	71.0490% <ø> (ø)

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

Components	Coverage Δ
dumpling	53.9663% <ø> (ø)
parser	∅ <ø> (∅)
br	47.9211% <ø> (-4.9723%)	⬇️

[Benjamin2037]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, lance6716

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• br/pkg/lightning/OWNERS [Benjamin2037,lance6716]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-12-12 09:45:24.206625593 +0000 UTC m=+349415.243852520: ☑️ agreed by lance6716.
• 2023-12-12 13:34:01.727586733 +0000 UTC m=+363132.764813655: ☑️ agreed by Benjamin2037.

[tiprow]

@ywqzzy: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
tiprow_fast_test	c96d2ff	link	true	/test tiprow_fast_test

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.