config: increase default RUScale from 1.40 to 2.10

[disksing]

Increase the default RUScale factor from 1.40 to 2.10 (1.5x) to adjust TiKV-side RU v2 calculation.

Summary by CodeRabbit

• Configuration Updates
  • Updated RU v2 TiKV weight scaling to improve accuracy of resource consumption metrics and capacity planning. Recalibration ensures more precise performance tracking and billing calculations for database operations.

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR updates the default RU v2 TiKV weight configuration by changing the RUScale constant from 1.40 to 2.10 in the DefaultRUV2TiKVConfig() function.

Changes

Cohort / File(s)	Summary
RU v2 Configuration config/client.go	Updated RUScale constant in DefaultRUV2TiKVConfig() from 1.40 to 2.10.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• ruv2: compute TiKV RU v2 in client-go #1905 — Main PR that updates the same RUScale value in DefaultRUV2TiKVConfig (1.40→2.10)
• config: change RUScale default value to 1.40 #1924 — Also modifies the RUScale constant in the same DefaultRUV2TiKVConfig() function in config/client.go

Suggested labels

lgtm, approved, size/XS

Suggested reviewers

• nolouch
• ekexium
• JmPotato

Poem

🐰 A constant revised, from one-four-oh to two,
The RUScale hops along, with values fresh and new,
TiKV weights adjusted with precision so keen,
Config optimized—the best you've ever seen! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title accurately summarizes the main change: updating the default RUScale configuration from 1.40 to 2.10.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ekexium, nolouch

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [ekexium]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2026-04-23 08:49:20.574976928 +0000 UTC m=+2242165.780336985: ☑️ agreed by nolouch.
• 2026-04-23 08:52:35.389795828 +0000 UTC m=+2242360.595155885: ☑️ agreed by ekexium.