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https://issues.apache.org/jira/browse/SOLR-2138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918050#action_12918050
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Renee Sun commented on SOLR-2138:
---------------------------------

yes, same JVM, jre1.6.0_21.

By the way, in solr_user blog, I added more information after more test... I 
have commented out the newSearcher and firstSearcher in solrconfig.xml, after 
that it loaded up all 130 cores in 1 minutes. It only took totally 1GB memory, 
whereas with Solr 1.3, with newSearcher and firstSearcher, it took about 1 
minute and 6.5GB on same core.

> Solr 1.4 takes long time to load cores (memory leak?)
> -----------------------------------------------------
>
>                 Key: SOLR-2138
>                 URL: https://issues.apache.org/jira/browse/SOLR-2138
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 1.4
>         Environment: 8 processors Intel(R) Xeon(R) CPU           E5345  @ 
> 2.33GHz
>            Reporter: Renee Sun
>
> 1. 32 GB total memory, with 16GB allocated to Solr server.
> 2. 130 cores, with most cores having 50,000 documents, and 2,3 cores having 
> 1~2.4Million documents (largest core takes about 11GB disk space)
> 3. in solr 1.3, there was no problem, it took 5,6 minutes to load up all 
> cores.
> 4. just upgrade to solr 1.4, it takes about 45+ minutes to load all 130 cores.
> 5. no solrconfig or schema change
> 6. autowarmCount="0" for all caches
> I have monitored the memory with JConsole. The 'queryConverter' warning in 
> catalina.out file helped me figured out that when about 70 cores were loaded, 
> the memory usage went from 300MB to 16GB, and stay at that level. Rest of the 
> cores are loaded up extremely slow.
> I find Yonik's fix note for SOLR-1797: fix ConcurrentModificationException 
> and potential memory
>   leaks in ResourceLoader. (yonik)
> We are in process of upgrading to 1.4.1

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