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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: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org