cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Joshua McKenzie (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-7486) Migrate to G1GC by default
Date Tue, 26 May 2015 20:16:51 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14559769#comment-14559769
] 

Joshua McKenzie edited comment on CASSANDRA-7486 at 5/26/15 8:16 PM:
---------------------------------------------------------------------

We also need to update conf/cassandra-env.ps1 and bin/cassandra.ps1 to keep Windows' configuration
in parity with linux on this ticket; the linked branches appear to be linux env only.

edit: probably worth mentioning - we don't yet have the performance testing infrastructure
to compare old v. new on Windows w/regards to gc types on the JVM and interactions w/MemoryManager
in the kernel so this would be a "blind" change on Windows. Given the focus in the JVM on
improvements to g1gc I'd prefer we keep the platforms in parity for now and test platform-specific
nuances w/regards to GC once we have the infrastructure to do so.


was (Author: joshuamckenzie):
We also need to update conf/cassandra-env.ps1 and bin/cassandra.ps1 to keep Windows' configuration
in parity with linux on this ticket; the linked branches appear to be linux env only.

> 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)

Mime
View raw message