About 40% regression or the XmlDocument performance test Create()

[maryamariyan]

The Regression for the XmlDocument performance test Create() is illustrated in the chart below.

Refer to benchview for more details.

@krwq I was looking at the Marvin hashcode commit dotnet/corefx@697e2b9 you submitted in January and it seems when instantiating XmlDocument it suddenly regressed. Was this by design or not intentional?

Overall the regression is about 45% on Linux (and around 30% on Windows). Although the regression seems to have started from January, there have been some ups and downs since so not exactly sure if I can find the exact root cause for the overall regression here in a straightforward way.

The test Create() as seen here, just attempts to create new XmlDocument() multiple times.

cc: @kouvel @danmosemsft

[RussKeldorph]

@maryamariyan Can you clarify why this was opened in coreclr instead of corefx?

[jkotas]

This issue was moved to dotnet/corefx#29260

[maryamariyan]

@RussKeldorph my bad - wrong repo.