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https://issues.apache.org/jira/browse/CASSANDRA-1714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pavel Yaskevich updated CASSANDRA-1714:
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Attachment: CASSANDRA-1714-v2.patch
branch: trunk (latest commit d8c4f7ce5fb2b5d2d1e75aee99426eec77ceadc2)
benchmark using stress.py (-S 8192 -n 100000): writes are equal, reads are 16
secs. faster (250 comparing to 266)
> zero-copy reads
> ---------------
>
> Key: CASSANDRA-1714
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1714
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Pavel Yaskevich
> Fix For: 0.7.1
>
> Attachments: CASSANDRA-1714-v2.patch, CASSANDRA-1714.patch,
> zerocopy.txt
>
> Original Estimate: 32h
> Remaining Estimate: 32h
>
> Since we are already using mmap'd ByteBuffers in MappedFileDataInput we
> should be able to do zero-copy reads (via buffer.slice()), which would give
> us better performance than CASSANDRA-1651 without having to worry about
> buffer management.
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