[ https://issues.apache.org/jira/browse/CASSANDRA-9345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14538336#comment-14538336 ]
Alan Boudreault commented on CASSANDRA-9345: -------------------------------------------- //cc [~carlyeks] [~enigmacurry] > LeveledCompactionStrategy bad performance > ----------------------------------------- > > Key: CASSANDRA-9345 > URL: https://issues.apache.org/jira/browse/CASSANDRA-9345 > Project: Cassandra > Issue Type: Bug > Reporter: Alan Boudreault > Fix For: 3.0 > > Attachments: temperature.yaml > > > While working on CASSANDRA-7409, we noticed that there were some bad > performance with LCS. It seems that the compaction is not triggered as it > should. The performance is really bad when using low heap but we can also see > that using a big heap there are something wrong with the number of > compactions. > (Take care when visualizing the graphs, the y-axis scales differ due to some > peaks) > http://dl.alanb.ca/perf/lcs-2.1-vs-trunk-LH.html > http://dl.alanb.ca/perf/lcs-2.1-vs-trunk-BH.html > I've attached the stress yaml config used for this test. -- This message was sent by Atlassian JIRA (v6.3.4#6332)