[
https://issues.apache.org/jira/browse/CASSANDRA-1651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12925832#action_12925832
]
T Jake Luciani commented on CASSANDRA-1651:
-------------------------------------------
Regarding 1)
https://svn.apache.org/viewvc/lucene/dev/trunk/lucene/src/java/org/apache/lucene/util/RecyclingByteBlockAllocator.java?view=markup
This class has a recycleByteBlocks() call that requires the caller to inform
this class when buffers are no longer in use.
Since we don't have the ability to do this now, it's not a good fit to me.
One other approach I'm trying is to used WeakHashRefs and ReferenceQueues to
track when a buffer is ready to be GCd and re-use it then.
> Improve read performance by using byte array slabs
> --------------------------------------------------
>
> Key: CASSANDRA-1651
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1651
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: T Jake Luciani
> Assignee: T Jake Luciani
> Priority: Minor
> Fix For: 0.7.0
>
> Attachments: 1651_v1.txt
>
>
> Now that the code has switched to byte buffers internally, it should be
> possible to improve read performance by reducing the number of byte array
> allocations.
> This patch accomplishes this by and re-using sections of a larger byte array
> slab.
> I've benchmarked it locally and seen a slight improvement on reads, a larger
> scale benchmark should be performed.
> Also the size of a slab can be configured in cassandra.yaml
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
