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https://issues.apache.org/jira/browse/CASSANDRA-8714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14310639#comment-14310639
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Robert Stupp commented on CASSANDRA-8714:
-----------------------------------------
Ah! I think I found the reason why Unsafe.allocateMemory is slower: It's in
{{os.cpp os::malloc}}. It uses two stat counters - one for # of allocations and
one for # of allocated bytes. If these might be interesting, we could prefer
Unsafe.allocateMemory over Native.malloc.
> row-cache: use preloaded jemalloc w/ Unsafe
> -------------------------------------------
>
> Key: CASSANDRA-8714
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8714
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: Robert Stupp
> Assignee: Robert Stupp
> Fix For: 3.0
>
> Attachments: 8714.txt
>
>
> Using jemalloc via Java's {{Unsafe}} is a better alternative on Linux than
> using jemalloc via JNA.
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