simulator: impl snapshot stats in simulator

[bufferflies]

What problem does this PR solve?

Issue Number: Close #6580

What is changed and how does it work?

tiup playground v7.1.0 --host 10.200.14.54 --pd.binpath=./bin/pd-server  --kv.binpath ./bin/pd-simulator --kv=1 --db=0 --kv.config=./tikv.config

tikv.config
case-name="redundant-balance-region"
sim-tick-interval="100ms"
store-io-per-second=100

[coprocessor]
region-split-size = "10GB"
[raftstore]
capacity= "10TB"

Check List

Tests

• Manual test (add detailed scripts or steps below)

Code changes

Side effects

Related changes

• PR to update pingcap/docs/pingcap/docs-cn:
• PR to update pingcap/tiup:
• Need to cherry-pick to the release branch

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• HuSharp
• lhy1024

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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

Reviewer can indicate their review by submitting an approval review.
Reviewer can cancel approval by submitting a request changes review.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.24 🎉

Comparison is base (58d9208) 74.58% compared to head (0f48d0d) 74.83%.

❗ Current head 0f48d0d differs from pull request most recent head 095adff. Consider uploading reports for the commit 095adff to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6579      +/-   ##
==========================================
+ Coverage   74.58%   74.83%   +0.24%     
==========================================
  Files         417      417              
  Lines       43068    42585     -483     
==========================================
- Hits        32124    31868     -256     
+ Misses       8090     7926     -164     
+ Partials     2854     2791      -63     

Flag	Coverage Δ
unittests	74.83% <ø> (+0.24%)	⬆️

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

see 52 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[HuSharp]

Need to change Readme.md

[HuSharp]

• change because https://github.com/tikv/tikv/blob/master/README.md#deploy-a-playground-with-binary
  When deploy with pd-endpoints
• tiup changed also https://github.com/pingcap/tiup/pull/2162/files#diff-0e2023f88922646c56345bb747099b3171db8e56fc6d8cba07bdeeeeaf08064eR68

[HuSharp]

/check-issue-triage-complete

[HuSharp]

LGTM

[bufferflies]

/merge

[ti-chi-bot]

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

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

If you have any questions about the PR merge process, please refer to pr process.

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 ti-community-infra/tichi repository.

[ti-chi-bot]

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

Commit hash: 095adff

[bufferflies]

/merge

[ti-chi-bot]

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

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

If you have any questions about the PR merge process, please refer to pr process.

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 ti-community-infra/tichi repository.