[
https://issues.apache.org/jira/browse/CASSANDRA-9988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16102503#comment-16102503
]
Jay Zhuang commented on CASSANDRA-9988:
---------------------------------------
{quote}
Also, what exactly are these graphs showing us?
{quote}
It's the throughput improvements before and after the change ({{($before -
$after)/$before}}), for example for {{SearchFound}} test, when the treeSize is
1, it has negative performance impact about {{-18%}}, when the treeSize is 16
or 32, it is about -65%. I attached the excel files with raw data to the
ticket.[^9988-test-result.xlsx][^9988-test-result-expsearch.xlsx]
> Introduce leaf-only iterator
> ----------------------------
>
> Key: CASSANDRA-9988
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9988
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: Benedict
> Assignee: Jay Zhuang
> Priority: Minor
> Labels: patch
> Fix For: 4.0
>
> Attachments: 9988-data.png, 9988-result2.png, 9988-result3.png,
> 9988-result.png, 9988-test-result3.png, 9988-test-result-expsearch.xlsx,
> 9988-test-result-raw.png, 9988-test-result.xlsx, 9988-trunk-new.txt,
> 9988-trunk-new-update.txt, trunk-9988.txt
>
>
> In many cases we have small btrees, small enough to fit in a single leaf
> page. In this case it _may_ be more efficient to specialise our iterator.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
