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Posted to commits@cassandra.apache.org by "Ariel Weisberg (JIRA)" <ji...@apache.org> on 2015/08/20 19:03:46 UTC

[jira] [Commented] (CASSANDRA-10140) Enable GC logging by default

    [ https://issues.apache.org/jira/browse/CASSANDRA-10140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14705287#comment-14705287 ] 

Ariel Weisberg commented on CASSANDRA-10140:
--------------------------------------------

Does anyone remember if GC logging writes directly to disk and impacts time spent in safe points? I can't remember if that is an issue or not.

I plumbed this code a couple of times, and come to a different conclusion every time.

> Enable GC logging by default
> ----------------------------
>
>                 Key: CASSANDRA-10140
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10140
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Config
>            Reporter: Chris Lohfink
>            Assignee: Chris Lohfink
>            Priority: Minor
>         Attachments: CASSANDRA-10140.txt
>
>
> Overhead for the gc logging is very small (with cycling logs in 7+) and it provides a ton of useful information. This will open up more for C* diagnostic tools to provide feedback as well without requiring restarts.



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