Update ngen priorities for Razor assemblies #12252
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davidwengier
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Sep 23, 2025
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@tydunkel do you want this in preview 2? |
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If possible, yes. I can drive an insertion if needed |
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/backport to release/dev18.0 |
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Started backporting to release/dev18.0: https://github.com/dotnet/razor/actions/runs/17956306754 |
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davidwengier
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Sep 23, 2025
Backport of #12252 to release/dev18.0 /cc @davidwengier @tydunkel ## Customer Impact ## Regression - [ ] Yes - [ ] No [If yes, specify when the regression was introduced. Provide the PR or commit if known.] ## Testing [How was the fix verified? How was the issue missed previously? What tests were added?] ## Risk [High/Medium/Low. Justify the indication by mentioning how risks were measured and addressed.]
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https://devdiv.visualstudio.com/DevDiv/_git/VS/pullrequest/673090 is the insertion containing this change for preview 2 |
This was referenced Oct 15, 2025
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Summary of the changes
VS 2026 is focused on improving startup time. To do this, we are changing ngen priorities so only assemblies with large JIT time during startup are priority 2.
This change updates the priorities of Microsoft.CodeAnlysis.Razor.Complier.dll and Microsoft.VisualStudio.LanguageServices.Razor.dll to be priority 2 since they were not a part of the startup trace of VS 2026.