In short: Reproduce xlLens workbook parsing and comparison measurements without treating them as competitor speed claims.
Published performance range
The benchmark creates two style-heavy XLSX files, scans every address through the product WorkbookIndex path, and verifies injected value and formatting changes. Memory usage means the highest observed process memory during comparison.
- 1,000 rows × 12 columns · 0.07 MB per file · 0.05 seconds · 87 MB memory usage
- 10,000 rows × 30 columns · 1.71 MB per file · 0.50 seconds · 145 MB memory usage
- 100,000 rows × 30 columns · 17.48 MB per file · 4.69 seconds · 437 MB memory usage
- 500,000 rows × 30 columns · 88.84 MB per file · 22.90 seconds · 1.45 GB memory usage
Interpretation
These numbers describe xlLens on its recorded test environment. They are not evidence that xlLens is faster than another product; that requires the same files, machine, versions, and measurement procedure.