Clarify if System.Runtime.ProfileOptimization is still relevant

[anonymous234]

Type of issue

Outdated article

Description

I came across an old codebase that calls System.Runtime.ProfileOptimization.StartProfile at launch, presumably in an attempt to optimize performance.

This API was apparently introduced in .NET Framework 4.5. However, modern .NET has Dynamic PGO which seems to be a much more modern implementation of a similar concept.

So naturally I would assume those lines are not doing much, if anything, anymore. If that is the case, it should probably be mentioned in the documentation, which seems to have been written in a time when single-core computers were still in use.

Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.runtime.profileoptimization?view=net-10.0

Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.Runtime/ProfileOptimization.xml

Document Version Independent Id

0e321570-46ef-7943-baf6-72abbf4d4102

Platform Id

a5f3d21a-ce8a-b4a3-41ef-3ef8cfc3730b

Article author

@dotnet-bot

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Tagging subscribers to this area: @dotnet/area-system-runtime

[gewarren]

@jkotas Is this class still relevant and/or should the remarks be updated?

[jkotas]

Yes, this API is still relevant. This API improves startup time. These improvements are complementary to the performance improvements provided by Dynamic PGO.

This API is actively used as demonstrated by bug reports. For example, recent regression that affected this API was reported in ~2 months.

I would assume those lines are not doing much, if anything, anymore

You can measure the impact of that line on the startup of your application.