[ https://issues.apache.org/jira/browse/CASSANDRA-10327?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jeff Jirsa resolved CASSANDRA-10327. ------------------------------------ Resolution: Won't Fix Seems unlikely we'll be addressing a 2.2 regression anymore, especially with a suspect 2.1 test. I'm reasonably sure you won't mind, [~benedict] , but if I'm wrong and you do care, please let me know. > Performance regression in 2.2 > ----------------------------- > > Key: CASSANDRA-10327 > URL: https://issues.apache.org/jira/browse/CASSANDRA-10327 > Project: Cassandra > Issue Type: Bug > Reporter: Benedict > Fix For: 2.2.x > > > Related to CASSANDRA-10326, one of the read-only workloads _appears_ to show > a regression in 2.2, however it is possible this is simply down to a > different compaction result (this shouldn't be very likely given the use of > LCS, though, and that we wait for compaction to acquiesce, and while the > different is not consistent across both runs, it is consistently worse). > The query is looking up the last item of a partition. > [run1|http://cstar.datastax.com/graph?stats=f0a17292-5a13-11e5-847a-42010af0688f&metric=op_rate&operation=3_user&smoothing=1&show_aggregates=true&xmin=0&xmax=155.43&ymin=0&ymax=13777.5] > [run2|http://cstar.datastax.com/graph?stats=e25aaaa0-5a13-11e5-ae0d-42010af0688f&metric=op_rate&operation=3_user&smoothing=1&show_aggregates=true&xmin=0&xmax=74.36&ymin=0&ymax=34078] -- 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