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https://issues.apache.org/jira/browse/CASSANDRA-4338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13796473#comment-13796473
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Marcus Eriksson commented on CASSANDRA-4338:
--------------------------------------------
reads should be exactly the same performance, nothing has been touched there.
i want to do the same experiment for RAR/CRAR (reading into a direct BB and
decompressing off-heap), will do that soon i hope
> Experiment with direct buffer in SequentialWriter
> -------------------------------------------------
>
> Key: CASSANDRA-4338
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4338
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Marcus Eriksson
> Priority: Minor
> Labels: performance
> Fix For: 2.1
>
> Attachments: 4338.benchmark.png, 4338.benchmark.snappycompressor.png,
> 4338-gc.tar.gz, 4338.single_node.read.png, 4338.single_node.write.png,
> gc-4338-patched.png, gc-trunk-me.png, gc-trunk.png, gc-with-patch-me.png
>
>
> Using a direct buffer instead of a heap-based byte[] should let us avoid a
> copy into native memory when we flush the buffer.
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