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Verify spin-waiting defaults before yield normalization occurs for ARM processors #101506

@kouvel

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@kouvel
  • Before yield normalization occurs, the current defaults lead to very little spin-waiting on ARM processors
  • On one hand, spin-waiting less until the yield normalization occurs seems like it could be a sensible option, on the other hand it can lead to more context switching during startup in some cases. It's unclear which would be less expensive.
  • Determine if improving the defaults that are used before yield normalization improves or degrades any startup perf metrics

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