- Tested with a page containing 33% of invalid Ids which go through TagBuilder.CreateSanitizedId.
- Ran 10,000 requests with 20 in parallel and measured perf.
- Data before the change:
System.String allocated by CreateSanitizedId: 1.84 mb
System.Text.StringBuilder allocated by CreateSanitizedId: 1.68 mb
- Data after the change:
System.String allocated by CreateSanitizedId: 0.720 mb
System.Text.StringBuilder allocated by CreateSanitizedId: 0.560 mb
Around 60% improvement from the original case.