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Type:
Improvement
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: Concurrency, Performance
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Labels:None
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Fully Compatible
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Platforms 2017-07-10
The vector of mutexes inside catalog/util/partitioned.h does not ensure that the locks are on different cache lines.
Ideally, we would use C++17's std::hardware_destructive_interference_size and alignas to fix this, however, not all of our toolchains currently support the required extended alignment.
Instead, as a simpler fix, we should just allocate the mutexes on the heap, which is very likely to ensure that they land on different cachelines.
- 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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- is duplicated by
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- Closed
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- related to
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- Closed
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