[ 
https://issues.apache.org/jira/browse/CASSANDRA-7486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14563034#comment-14563034
 ] 

Joshua McKenzie commented on CASSANDRA-7486:
--------------------------------------------

Seems reasonable to me and glad to have that documented in the ticket (hint 
hint).

Last question I have before commit is for [~ato...@datastax.com] (though 
anyone's welcome to chime in): Why did we settle on 500ms for our 
MaxGCPauseMillis? Was that also part of an offline conversation, or are we just 
rolling with the #'s Michael used above? Do we have any test data to show that 
500 is a solid default for our use case rather than the pre-packaged 200 for g1 
or the 2000 you'd used above for some testing?

> 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 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)

Reply via email to