perf(example): add PerfExample5 and PerfExample6

[javeme]

Change-Id: Ibe3df29c6926c5c58bab217220f3005d92476f7b

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 42.35%. Comparing base (0946d5d) to head (6491e65).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2860      +/-   ##
============================================
+ Coverage     40.91%   42.35%   +1.44%     
- Complexity      333      561     +228     
============================================
  Files           747      756       +9     
  Lines         60168    60435     +267     
  Branches       7683     7705      +22     
============================================
+ Hits          24615    25599     +984     
+ Misses        32975    32192     -783     
- Partials       2578     2644      +66     

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[imbajin]

The logger declaration in PerfExample1 and PerfExample2 is added but never used. Consider removing these unused imports and logger declarations to avoid dead code.

[javeme]

this time we marked the PerfExampleBase.LOG as private.

[imbajin]

Same issue as PerfExample1 - logger is declared but never used. Remove the unused import and logger declaration.

[imbajin]

The comment says 'query vertices/adj-edges by ids' but this class only provides vertex and edge querying functionality. The comment should be more specific about what this example demonstrates compared to PerfExample3.

[javeme]

PerfExample3 is a test for: insert vertices with indexes in order

[imbajin]

The comment is identical to PerfExample5 but this class has different functionality (batch insertion with edges). Update the comment to accurately describe what PerfExample6 demonstrates.

[javeme]

In this PerfExample6 test, we insert some edges (one edge per vertex) for adj-edges test.

[imbajin]

Consider extracting the BATCH constant to a class-level constant or making it configurable, as hardcoded values like 100 reduce flexibility for performance testing.

[javeme]

Only the insertion test involves batch, and batch is not a dimension we test, so keep it for now.

[imbajin]

Good refactoring to move the elapsed() method to the base class where it can be reused by all performance examples.

[Copilot]

Pull Request Overview

This PR introduces two new performance testing examples (PerfExample5 and PerfExample6) for HugeGraph and refactors existing performance testing code. The changes focus on improving query performance testing capabilities and code organization.

• Adds PerfExample5 for testing vertex/edge queries by IDs with improved performance measurement
• Adds PerfExample6 extending PerfExample5 with sequential vertex insertion and edge creation
• Refactors the base class and existing examples to improve code reusability and logging consistency

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
PerfExampleBase.java	Refactors query methods, adds utility functions, and improves logging with runtime parameters
PerfExample5.java	New performance test class for vertex/edge queries by IDs with detailed timing measurements
PerfExample6.java	New performance test extending PerfExample5 with sequential data insertion patterns
PerfExample4.java	Updates logger reference and removes duplicated elapsed() method
PerfExample1.java	Adds missing logger import and declaration
PerfExample2.java	Adds missing logger import and declaration

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[Copilot]

Changing the Logger from 'protected' to 'private' breaks inheritance for subclasses that may need to access the logger. Consider keeping it protected or having subclasses define their own loggers.

Suggested change

	private static final Logger LOG = Log.logger(PerfExampleBase.class);
	protected static final Logger LOG = Log.logger(PerfExampleBase.class);

[Copilot]

Division by zero error will occur if 'cost' is 0. Add a check to prevent division by zero before calculating vertices/s.

Suggested change

	LOG.info("Query {} vertices with thread({}): {} vertices/s",
	totalV, thread, totalV * 1000 / cost);
	if (cost == 0) {
	LOG.info("Query {} vertices with thread({}): N/A vertices/s (cost=0ms)", totalV, thread);
	} else {
	LOG.info("Query {} vertices with thread({}): {} vertices/s",
	totalV, thread, totalV * 1000 / cost);
	}

[Copilot]

Division by zero error will occur if 'cost' is 0. Add a check to prevent division by zero before calculating vertices/s.

Suggested change

	LOG.info("Query {} vertices with thread({}): {} vertices/s",
	totalV, thread, totalV * 1000 / cost);
	if (cost == 0) {
	LOG.info("Query {} vertices with thread({}): N/A vertices/s (cost=0)", totalV, thread);
	} else {
	LOG.info("Query {} vertices with thread({}): {} vertices/s",
	totalV, thread, totalV * 1000 / cost);
	}

[Copilot]

Division by zero error will occur if 'cost' is 0. Add a check to prevent division by zero before calculating vertices/s and edges/s.