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Type:
Improvement
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: 3.3.6
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Component/s: Portability
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Fully Compatible
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Platforms 2017-07-10
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None
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3
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None
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None
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None
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None
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Cache line sizes vary by platform, and specific processors.
| Processor Family | Cache Line Size |
|---|---|
| x64 | 64 |
| PowerPC64 | 128 |
| s390x | 256 |
For PowerPC64, I am considering POWER8 instead of older processors.
An case where we try to align to cache line size: https://github.com/mongodb/mongo/blob/master/src/mongo/db/concurrency/lock_state.cpp#L90
- depends on
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SERVER-29712 Polyfill std::hardware_{con,de}structive_interference_size
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- Closed
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