[ https://issues.apache.org/jira/browse/SOLR-1864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12874055#action_12874055 ] 

Peter Karich commented on SOLR-1864:
------------------------------------

This might be a duplicate of: https://issues.apache.org/jira/browse/SOLR-1775

The reason might be (as Paul Noble noted) that the garbage collector is busy a lot because of autowarm up after index switch was done

> Master/Slave replication causes tomcat to be unresponsive on slave till replication is being done.
> --------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-1864
>                 URL: https://issues.apache.org/jira/browse/SOLR-1864
>             Project: Solr
>          Issue Type: Bug
>          Components: replication (java)
>    Affects Versions: 1.5
>         Environment: Centos 5.2, Tomcat5, java version "1.6.0"
> OpenJDK  Runtime Environment (build 1.6.0-b09)
> OpenJDK 64-Bit Server VM (build 1.6.0-b09, mixed mode)
>            Reporter: Marcin
>
> Hi guys,
> I have found a strange behaviour on tomcat5, centos 5.2.
> While replication is being done (> million rows) tomcat5 seems to be unresponsive till its finished.
> Please help
> cheers,
> /Marcin

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