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https://issues.apache.org/jira/browse/SOLR-9815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15732199#comment-15732199
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Jan Høydahl commented on SOLR-9815:
-----------------------------------

I was more thinking about your solr.in.sh prior to upgrading to 6.3. Since the 
default in solr.in.sh used to be verbose GC, did you change it? Or is 6.3 the 
first Solr version you are running?

Instead of empty GC_LOG_OPTS, you could try to pick any combination of the GC 
related JVM flags that suits your needs the best.

> Verbose Garbage Collection logging is on by default
> ---------------------------------------------------
>
>                 Key: SOLR-9815
>                 URL: https://issues.apache.org/jira/browse/SOLR-9815
>             Project: Solr
>          Issue Type: Wish
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: logging
>    Affects Versions: 6.3
>            Reporter: Gethin James
>            Priority: Minor
>
> There have been some excellent logging fixes in 6.3 
> (http://www.cominvent.com/2016/11/07/solr-logging-just-got-better/).  However 
> now, by default, Solr is logging a great deal of garbage collection 
> information.
> It seems that this logging is excessive, can we make the default logging to 
> not be verbose?
> For linux/mac setting GC_LOG_OPTS="" in solr.in.sh seems to work around the 
> issue, but looking at solr.cmd I don't think that will work for windows.



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