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https://issues.apache.org/jira/browse/DIRECTMEMORY-28?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13176742#comment-13176742
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Benoit Perroud commented on DIRECTMEMORY-28:
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Cassandra uses Unsafe for a simple reason : they are allocating a different
memory region for *every* cached object. Having this in mind, Unsafe.free
directly free and return the region (you need to pay extra attention to not
read this region anymore), while ByteBuffer allocation need to wait for grabage
collection to be effectively freed. In the case of DM, as buffers are way less
frequently allocated and desallocated, I'm not sure the usage of Unsafe will
add lot of improvement.
> Consider using Unsafe instead DirectBuffer
> ------------------------------------------
>
> Key: DIRECTMEMORY-28
> URL: https://issues.apache.org/jira/browse/DIRECTMEMORY-28
> Project: Apache DirectMemory
> Issue Type: Improvement
> Reporter: Raffaele P. Guidi
> Priority: Minor
>
> I already tried in the past but without too much success. Does it give any
> performance improvement (considered the way we use it)?
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