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https://issues.apache.org/jira/browse/IGNITE-23301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Scherbakov updated IGNITE-23301:
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Description:
Currently coarse-grained (table,index) locks use the same path as fine-grained
key locks.
This leads to broken TPS scaling in high amount of cores environments due to
high contention.
This can be fixed by implementing specialized type of locks to handle high
contention scenarios.
We need only IX and S locks to enforce serializability in the current approach.
IX locks can be implemented as counter-based and we need only tryLock(IX)
was:
Currently coarse-grained (table,index) locks use the same path as fine-grained
key locks.
This leads to broken TPS scaling in high amount of cores environments.
This can be fixed by implementing specialized type of locks to handle high
contention scenarios.
We need only IX and S locks to enforce serializability in the current approach.
IX locks can be implemented as counter-based and we need only tryLock(IX)
> Optimize coarse-grained locks
> -----------------------------
>
> Key: IGNITE-23301
> URL: https://issues.apache.org/jira/browse/IGNITE-23301
> Project: Ignite
> Issue Type: Improvement
> Affects Versions: 3.0.0-beta1
> Reporter: Alexey Scherbakov
> Assignee: Alexey Scherbakov
> Priority: Major
> Labels: ignite-3
> Fix For: 3.0
>
>
> Currently coarse-grained (table,index) locks use the same path as
> fine-grained key locks.
> This leads to broken TPS scaling in high amount of cores environments due to
> high contention.
> This can be fixed by implementing specialized type of locks to handle high
> contention scenarios.
> We need only IX and S locks to enforce serializability in the current
> approach.
> IX locks can be implemented as counter-based and we need only tryLock(IX)
>
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