Benedict created CASSANDRA-6759:
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Summary: CommitLogSegment should provide madvise DONTNEED hint
after syncing a segment
Key: CASSANDRA-6759
URL: https://issues.apache.org/jira/browse/CASSANDRA-6759
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Benedict
Assignee: Benedict
Priority: Minor
Fix For: 2.1 beta2
This is a really simple change, copying what we do with SequentialWriter, but
here we know for sure we don't intend to re-read the region again in the near
future so it's definitely wasted file buffer space.
I have a patch, but I would like to do some brief performance comparisons
before submitting it, and see if providing DONTNEED at file creation like we do
for SW is sensible.
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