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https://issues.apache.org/jira/browse/CASSANDRA-1969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vijay updated CASSANDRA-1969:
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Description:
Java BB.allocateDirect() will allocate native memory out of the JVM and will
help reducing the GC pressure in the JVM with a large Cache.
>From some of the basic tests it shows around 50% improvement than doing a
>normal Object cache.
In addition this patch provide the users an option to choose BB.allocateDirect
or store everything in the heap.
was:
Java BB.allocateDirect() will allocate memory out of the GC region and will
help reducing the GC pressure on the JVM.
>From some of the basic tests it shows around 50% improvement than doing a
>normal Object cache.
In addition we can provide the users an option to choose BB.allocateDirect or
store everything in the heap.
> Use BB for row cache - To Improve GC performance.
> -------------------------------------------------
>
> Key: CASSANDRA-1969
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1969
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Environment: Linux and Mac
> Reporter: Vijay
> Assignee: Vijay
> Priority: Minor
>
> Java BB.allocateDirect() will allocate native memory out of the JVM and will
> help reducing the GC pressure in the JVM with a large Cache.
> From some of the basic tests it shows around 50% improvement than doing a
> normal Object cache.
> In addition this patch provide the users an option to choose
> BB.allocateDirect or store everything in the heap.
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