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Albert P Tobey commented on CASSANDRA-7486: ------------------------------------------- The main point of switching to G1 was to enable most users to get decent - if not the best - performance out of the box without having to guess HEAP_NEWSIZE. Since nobody has the time or inclination to test/discover further, it might as well be rolled back. Users won't notice any difference in pain since there was never a release with G1. > Migrate to G1GC by default > -------------------------- > > Key: CASSANDRA-7486 > URL: https://issues.apache.org/jira/browse/CASSANDRA-7486 > Project: Cassandra > Issue Type: New Feature > Components: Config > Reporter: Jonathan Ellis > Assignee: Albert P Tobey > Fix For: 3.0 alpha 1 > > > See > http://www.slideshare.net/MonicaBeckwith/garbage-first-garbage-collector-g1-7486gc-migration-to-expectations-and-advanced-tuning > and https://twitter.com/rbranson/status/482113561431265281 > May want to default 2.1 to G1. > 2.1 is a different animal from 2.0 after moving most of memtables off heap. > Suspect this will help G1 even more than CMS. (NB this is off by default but > needs to be part of the test.) -- This message was sent by Atlassian JIRA (v6.3.4#6332)