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Update spin-wait pause/yield normalization - #55295
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kouvel
commented
Jul 7, 2021
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- Modified the measurement to use much less time and to remeasure periodically to reduce CPU usage during startup
- Each measurement does a low-microsecond-level measurement of pause/yield times
- Some small amount of history of recent measurements is retained and used to for now take the lowest measurement for normalization
- Measurements are done lazily, and at most every few seconds another measurement is taken
- Added a profiling event that includes info about a measurement and the established value from recent measurements that is used for normalization
- Modified the measurement to use much less time and to remeasure periodically to reduce CPU usage during startup - Each measurement does a low-microsecond-level measurement of pause/yield times - Some small amount of history of recent measurements is retained and used to for now take the lowest measurement for normalization - Measurements are done lazily, and at most every few seconds another measurement is taken - Added a profiling event that includes info about a measurement and the established value from recent measurements that is used for normalization
ghost
commented
Jul 7, 2021
Tagging subscribers to this area: @mangod9 Issue Details
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This was referenced Jul 7, 2021
mangod9
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Jul 8, 2021
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mangod9
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Jul 8, 2021
brianrob
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