[
https://issues.apache.org/jira/browse/CASSANDRA-10403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16049086#comment-16049086
]
Stefano Ortolani commented on CASSANDRA-10403:
----------------------------------------------
bq. Just a note here, even with 8G heap, some GC can take very long (8cpu
machine, 2TB data size). While typical is about 220ms, it can take > 20sec.
Not by this much, but I have seen similar pauses (~10secs) on 12cpu machine,
200GB data, LCS, 50MB max partition size, while doing inc repairs (RF=3, pause
was hitting all three nodes). Currently exploring migrating from CMS to G1 for
this reason.
> Consider reverting to CMS GC on 3.0
> -----------------------------------
>
> Key: CASSANDRA-10403
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10403
> Project: Cassandra
> Issue Type: Improvement
> Components: Configuration
> Reporter: Joshua McKenzie
> Assignee: Paulo Motta
> Fix For: 3.0.0 rc2
>
>
> Reference discussion on CASSANDRA-7486.
> For smaller heap sizes G1 appears to have some throughput/latency issues when
> compared to CMS. With our default max heap size at 8G on 3.0, there's a
> strong argument to be made for having CMS as the default for the 3.0 release.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
