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https://issues.apache.org/jira/browse/SOLR-4074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13497289#comment-13497289
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Mark Miller commented on SOLR-4074:
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I think a few years ago that may have made sense - but at this point, being
anal about 70MB of RAM considering the performance gain seems a little dated. I
bet 8/10 new users get better performance from Lucene and .1/10 would find they
have to lower it. Probably a sim number as those that already have to lower -
I'm not sure there is anything special about 32 if your already fighting for
every megabyte.
> We should default ramBufferSizeMB to around 100
> -----------------------------------------------
>
> Key: SOLR-4074
> URL: https://issues.apache.org/jira/browse/SOLR-4074
> Project: Solr
> Issue Type: Improvement
> Reporter: Mark Miller
> Assignee: Mark Miller
> Priority: Minor
> Fix For: 4.1, 5.0
>
>
> You get diminishing returns after 100, but gains up to 100. In this day and
> age of RAM, it seems better to default to 100 and have essentially the top
> indexing speed the buffer can give us.
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