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Michael Perrone commented on CASSANDRA-7486: -------------------------------------------- Have not seen evacuation failures, but test systems ran tight enough under heavy load to increase the reserve percentage. Heap was 20GB. > Compare CMS and G1 pause times > ------------------------------ > > Key: CASSANDRA-7486 > URL: https://issues.apache.org/jira/browse/CASSANDRA-7486 > Project: Cassandra > Issue Type: Test > Components: Config > Reporter: Jonathan Ellis > Assignee: Albert P Tobey > Fix For: 3.0 beta 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)